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Weidmüller - Hardly any branch of industry today can do without electronics and electrical connection technology. On the contrary, internationalization and technological change are progressing faster and faster. However, it is not only complex products that master the diverse challenges of a technological world. There would be no modern industry without cables and lines for the transmission of energy, signals or data. The same applies to the connection technology required for this. The Weidmüller company has specialized in the development of exactly this connection technology. She calls it Industrial Connectivity. The Weidmüller company has existed since 1850 and has its headquarters in Detmold. As a global industrial company, it has dozens of agencies on all continents and is one of the leading manufacturers in this field. As an original manufacturer or original equipment manufacturer, the company sets global standards in electrical connection technology. The products are characterized by precise processing and the highest quality. We at the eibabo® technology store have been selling the Weidmüller range with great success for many years. Complaints are extremely rare. The company's developments are used, among other things, in machine and vehicle construction, in the energy industry, by device manufacturers, in traffic engineering and in the building infrastructure. The Weidmüller product range includes plug and circuit board connectors, terminal blocks, protected assemblies, Industrial Ethernet components and relay couplers. The product portfolio also includes power supply and overvoltage protection modules for all connection types. Components for electrical installation and equipment labeling as well as basic I/O components round off the range. The innovative products of the Weidmüller brand are also available in the eibabo® shops of eibmarkt®. In addition to high-quality tools, you will also find feed-through terminals, installation terminals, protective conductor terminals, potential distributor terminals, end brackets, couplings, cross-connectors, voltage testers, network switches or mounting plates in numerous product categories.

Found in shop categories: 9

Through terminal - Which feed-through terminals should you use for your control cabinet? Are terminal blocks the same as feed-through blocks? Find out here what the differences are between feed-through terminals and what they are used for. In the eibabo® technology store you can get feed-through terminal blocks from all well-known manufacturers such as ABB, Eaton, Eberle, Hager, Metz, Phoenix, Schneider Electric, Siemens, Spelsberg, TE Connectivity, WAGO, Weidmüller, Wieland and Wöhner at great prices and in large quantities. We deliver our range worldwide.Feed-through terminals fulfill several functions and are among the most important components within a control cabinet. It is mounted on the DIN rail. Feed-through terminals are connecting elements between the incoming cables and lines of an installation and the actual control cabinet installation.What is the difference between feed-through terminals and terminal blocks?Feed-through terminals are terminal blocks. 'Terminal block' is a generic term that also includes other types of terminals. These include, for example, fuse terminals and relay terminals. Other terms describe the way a terminal is constructed or its ability to connect the conductors. In these contexts, one often hears about one-tier terminals, three-tier terminals, spring-loaded terminals, push-in terminals or screw terminals. We would like to briefly discuss some of these types in the following sections.Why are feed-through terminals indispensable components in the control cabinet?Feed-through terminals offer the necessary flexibility in the control cabinet to connect rigid incoming cables and lines to the relevant fuses, actuators or other devices. A direct connection without feed-through terminals does not make sense. A clear installation would not be possible. First, the cables and lines are clearly laid out on the terminal blocks. They then lead them from there to the devices in the control cabinet. As a result, the entire installation remains flexible because there are connection points and nodes for checking and changing the system structure.Image: Phoenix PT 2.5-3L feed-through terminalEach connection that is made takes on a function previously defined in the circuit diagram. The installation of the system and the function of individual connections remains traceable. This makes later additions, repairs and maintenance easier. If you want to make changes, these can be done by reconnecting individual wires. The rigid supply lines remain unaffected.And there are other advantages: For example, you can only connect two wires to many modular installation devices. The feed-through terminal blocks offer further advantages here. An example: A fuse is intended to protect several lines. However, you can only connect the cores of one line. In order to also integrate the other lines, you can create clear bridge connections on the feed-through terminals. The electrician can also carry out insulation measurements and other control work directly on the terminal blocks. Troubleshooting is made much easier and faster.What different feed-through terminals are there?Each manufacturer builds the feed-through terminals slightly differently. However, the principle is the same. There are single-level terminals and multi-level terminals. While you can only connect one line in the single-level terminal, several incoming and outgoing lines can be installed in multi-level terminals. Use a three-tier terminal for a three-wire cable. The is designed for connecting the protective conductor, the L conductor and the N conductor. This arrangement saves an enormous amount of space in the control cabinet. Three-tier terminals are mainly found in the control cabinets of private households and in smart home installations. TIP:On some models, the protective conductor has no connection point for the outgoing line. The protective earth contact is made directly by the clamp connection with the DIN rail. Another feature that distinguishes feed-through terminals is the way the wires are fastened. The screw terminal fixes the respective wire with a screw connection. This method takes a comparatively long time, especially when the plant is complex. A spring-loaded terminal makes electrical contact with a mechanical spring. This consists of a bent, flat copper contact. The wire must be inserted through a hole in the copper contact. This is only possible if the contact is clamped with a pointed tool. When the clamping tool is removed, the spring pulls back and the wire is jammed. The connection is released in the same way. The push-in connection is another fastening variant, similar to the spring-loaded terminal. Here, too, a spring presses against the wire. In contrast to the spring-cage connection, installation is tool-free and therefore even faster. The wire is inserted into the spring shaft of the feed-through terminal and the spring locks automatically. If you want to loosen the connection, you need a pointed tool. A small screwdriver is usually sufficient, which bends the retaining spring to the side and loosens the wire. This method saves a lot of time with cores with solid conductors. Wires with flexible conductors can also be attached using wire end sleeves using this method.Solid and flexible veinsYou can connect cables with solid cores and flexible strands in feed-through terminals. Both variants and combinations are permitted. Flexible cores can easily fan out. The use of ferrules makes handling easier with spring connections.The attachment of the wire using cutting terminals is rather rare. Use this variant if your veins are particularly thin. Here, the contact is made through a small cut in the insulation.Depending on the function and area of application, cables and wires with different cross-sections are used in the electrical installation. This affects the feed-through terminals. Appropriate feed-through terminals are available for all common cable cross-sections. Whether a clamp can be used for a specific cross-section is indicated on the clamp. It is usually possible to bridge the L conductor and the N conductor using several feed-through terminals, sometimes on several levels. Suitable cable bridges are available here in the shop.markLabeling the lines helps with orientation, especially when a new employee or another electrical company takes over the system. Some terminals have labeling fields. We recommend using this option and labeling all devices and connections in a meaningful way.The design of the neutral conductor contact is another distinguishing feature. In addition to models for classic wiring, there are feed-through terminals with which an N busbar can be used. The neutral contact on these terminals is designed accordingly so that the connection can be made with one hand. When using a busbar, you need an additional terminal for feeding. To securely fix the rail, use suitable support blocks or the fastening levers on the end clamps at the beginning and end of the row. Longer rails are additionally fixed every 20 cm. To be able to use cables with five cores, use multi-level terminals to connect the outer conductors.How to use feed-through terminals in the KNX area?In addition to the classic feed-through terminals, you can get special terminal blocks for low-voltage or KNX use. These have a different color and can therefore immediately be distinguished from other terminal blocks. This also contributes to order and clarity in the control cabinet. In terms of function, these terminal blocks hardly differ from conventional terminal blocks. You can connect cables with a cross-section of up to 1.5 mm2 to these terminals.Why are feed-through terminals not closed on one side?The available space in the control cabinet is specified in modular widths (HP). These provide information about the capacity of a control cabinet. Feed-through terminals are not manufactured according to this pitch, but as narrow as possible. The narrower a terminal, the more terminals can be installed on a specific area of the DIN rail. Good to know:Feed-through terminals are not closed on one side. The missing cover saves a little space. In relation to the length of a top-hat rail, more terminals can be mounted. Since feed-through terminals are mounted directly next to each other on the DIN rail, there is no danger of touching the contacts on the open sides. Without a side cover, a terminal is narrower. A cover is only attached to the last terminal in a row.Which installation aids and which accessories are available for feed-through terminal blocks?For the construction of a control cabinet, you receive numerous well thought-out components that simplify your work. For feed-through terminals, for example, the cross-bridges and busbars already mentioned are available. In addition, you will receive separator plates and end plates, covers, feeds or end blocks as well as test plugs, fuses, labeling fields and other components.  Catalogue content:In this eibabo® catalogue Terminal blocks > Feed-through terminal block you will find items from the following product groups:Item overview:Base clampBolt clampChangeover relayCompartment clampConnecting combsConnection moduleConnection technologyDistribution blockFeed terminalFour-level clampLightning arrowMarshalling boxMini clampMotor connection terminalMotor output terminalMulti-level clampMulti-wire terminalNeutral terminalPotential clampRelay terminalSocketSpring clampsSpring clipSwitching relayTerminal block connectorThermal voltage terminal blockThrough terminalUniversal clampfrom the following manufacturers:Manufacturer overview catalogue Through terminal:ABBEatonEberleHagerMetzPhoenixSchneider ElectricSiemensSpelsbergTE ConnectivityWAGOWeidmüllerWielandWöhner
Busbar holder - With a busbar, individual machines can be quickly and easily connected to one another in the switch box without having to create complex cable bridges by hand. Busbar supports form the installation basis for this and give the entire system the necessary stability. The high-quality busbar supports, which you can buy inexpensively in the eibabo shop, come from well-known manufacturers such as Wago, Phoenix, Hager, Weidmüller, ABB, Rittal or Eaton and have proven themselves thousands of times over as quality products all over the world. Speaking of which, we will not only send you the busbar supports, but also all the items purchased from our online shop to your construction site worldwide. With short delivery times, insured shipping and Trusted Shops buyer protection, you can be sure that your installation project will not be delayed.Catalogue content:In this eibabo® catalogue Energy distribution systems > Busbar support you will find items from the following product groups:Item overview:AccessoriesBaseBusbarBusbar coverBusbar end pieceBusbar holderBusbar insertsBusbar supportBusbar systemCoverCover capCover plateCovering capInterior designInterior design systemManifold assemblyMounting devicePolycarbonatePower distributionProtective conductor rail supportRail holderRail mountRail supportShield clamp holderSpare partSpare PartsSupport standZero rail supportfrom the following manufacturers:Manufacturer overview catalogue Busbar holder:ABBABNDehnEatonEricoHagerHenselMersenMüllerPhoenixRittalSchneider ElectricSiemensStriebel & JohnWAGOWeidmüllerWielandWöhner
Transfer module - Transfer modules are components of the electrical installation. They represent a safe and maintenance-free connection for the flexible wiring of signals and thus take over the transmission and distribution of signals within the field and control level. The signals are converted from standardized plug connections to terminal connections. Transfer modules therefore offer the advantage of quick installation and commissioning, efficient inspection and troubleshooting thanks to clear wiring, maintenance-free connections of the signal lines and efficient use of space in the meter cabinet thanks to a high packing density. In the eibabo online shop you can get high-quality transfer modules from well-known manufacturers such as Weidmüller, Wago, Siemens, Schneider-Electric, Phoenix and Mitsubishi. Depending on the type and model, the structure of the module and the number of poles are different. Simply select the right component for your application.Catalogue content:In this eibabo® catalogue pLC's > interface module you will find items from the following product groups:Item overview:Board connectorConnecting bridgeConnection moduleConnectorControl accessoriesCoupling relayFastenerHeaderInterface moduleLogic building blocksMounting basePlug-in card blockPlug-in card holderPlug-in terminalPotential distributorPower stripRelay couplerRelay moduleScrew socketScrew terminal blockScrew terminal socketSnap footSystem wiringTerminal blockTransfer adapterTransfer blocksTransfer elementTransfer modulefrom the following manufacturers:Manufacturer overview catalogue Transfer module:MitsubishiPhoenixSchneider ElectricSiemensWAGOWeidmüllerWisi
Surge protector - electr. - Are you looking for a surge arrester for your electrical installation? But you are still not sure what requirements such a device has to meet? Then read on here. In order to understand why a surge arrester is useful, you must be aware of the dangers associated with voltage spikes or surges. Even if these events are rare and only last a few milliseconds, they can still result in major damage. We therefore always recommend a surge protector to prevent the loss or damage of sensitive electronic equipment. We will help you to choose the right item.What are surge arresters?Overvoltage protection devices are of great importance in electrical engineering. These are used to limit and divert overvoltages in electrical lines and sensitive devices such as computers, televisions or hi-fi systems. But how does overvoltage occur? The normal mains voltage in Germany is 230V. Overvoltages go well beyond this value and are caused, for example, by lightning strikes, short circuits, electrostatic discharges or switching operations by the network operator. The consequences of such an event depend on the magnitude of the overvoltage, the speed of the voltage pulse and its duration. Failure to set up protective measures can result in fire, explosion and personal injury.The surge arresters (Surge Protective Devices SPD) are installed in the distribution board or in the sub-distribution boards and connected between the active conductors and earth. Surge arresters are usually designed as pluggable modular devices or as devices for mounting on top-hat rails and some are equipped with a fault indicator. In this eibabo® catalogue, we present the devices that are used for overvoltage protection and are therefore part of the internal lightning protection of a building.Lightning protection and effective surge protectionIn order to be able to decide on a specific surge arrester, you should know the entire structure of an effective system for protection against lightning and surge voltage. Such a system usually consists of several parts. This can quickly get a little confusing. We give a small overview.Already knew?We distinguish between surge protection and lightning protection. Surge protection devices are designed to protect against damage caused by excessive voltage. Lightning protection systems, on the other hand, are intended to protect against damage caused by excessive currents.A few definitions of terms in advance:Lightning is high-energy and carries very high lightning currents. In the case of overvoltages, the currents and energy are small, but the charge difference between two potentials is very large. In order to counteract these dangers completely, such a system consists of three parts:the external lightning protectionthe internal lightning protectionthe overvoltage protection In this context, different categories and protection classes are often mentioned, which laypeople quickly confuse. These include:Lightning protection classes (I-IV)Buildings are divided into four lightning protection classes in order to be able to assess the risk of lightning strikes. The class in which a building is to be classified depends on its type, use and the damage to be expected. The lightning protection class determines the structure and dimensioning of the lightning protection system.Overvoltage Categories (I-IV)The four overvoltage categories describe the surge resistance of electronic devices. This specification therefore refers to end devices such as laptops (category I), toasters (category II), residual current circuit breakers (category III) or primary overcurrent protection devices (category IV). Look in the operating instructions of the respective device. The tolerability to power surges is low for electrical devices of category I and is 1500 volts. Category IV devices can handle up to 6000 volts.Surge Protection (Type 1, Type 2, Type 3)Surge protection devices (e.g. surge arresters) are divided into coarse protection, medium protection or fine protection. Which type a device is to be assigned to depends primarily on the voltage levels that it can absorb. This results in the respective area of application.Image: Dehn DG M TNS 275 DEHNguard surge arresterThe external lightning protectionExternal lightning protection consists of lightning conductors, lightning arrestors, earthing, fastenings and so on. Just this much: The external lightning protection intercepts direct lightning strikes before they hit the building. The high lightning current is discharged directly into the ground via the grounding system. In principle, there is no obligation to install external lightning protection systems in Germany unless your building:stands free on a mountainis over 20 meters highhas a combustible roof (e.g. made of thatch, straw)has public transport (theater, swimming pool) But even if your building does not meet any of these criteria, a lightning conductor is always useful, because the damage can be enormous in the event of a strike. You can find more information about external lightning protection, grounding and installation as well as purchasing here in the shop. Simply use the appropriate terms in the input field of our intelligent search.The internal lightning protectionThere is no denying that lightning and other surge voltages are dangerous. In order to protect apartments, houses, industrial plants and the devices and systems they contain, effective internal lightning protection and overvoltage protection is required. The internal lightning protection is a potential equalization in which all metal pipe installations and all cable installations in a house are connected to each other and to the main earthing bar. This prevents voltage differences, lightning flashovers in the building and the resulting danger to people and technology.The overvoltage protectionOvervoltage protection is part of the internal lightning protection. When choosing a suitable surge protector, we consider the nature of the potential interference and the type of equipment to be protected. How much energy does a possible overvoltage have? Which devices are particularly sensitive to voltage pulses due to their design? A current device for overvoltage protection has a three-stage structure and thus optimally protects buildings, systems and devices from damage. This includes, among other things, a combination of different surge arresters adapted to the respective requirements. definitionThe term 'transient' is rare in German usage. It means that something is temporary, fleeting and impermanent. There are different requirement classes for overvoltage protection devices. A distinction is made between Type 1 (general protection), Type 2 (medium protection) or Type 3 (fine protection). The standard devices represent the fine protection and protect against voltages up to a certain level, the extended devices offer additional protection against transient voltage peaks and the high protection standard also protects against impulse currents. But what does it exactly mean?Type 1 overvoltage protection is called a lightning arrester. This is suitable for deriving high lightning currents via the internal or external lightning protection system. The residual voltage is reduced to a level between 6000 volts and 1300 volts. These devices are ideally installed in front of the house installation so that the lightning current does not even get into the distribution. However, this basic protection is not yet sufficient to secure the end devices.Type 2 overvoltage protection represents medium protection and reduces the residual lightning voltages from the upstream lightning arresters to values between 2000 volts and 600 volts. These include the surge arresters offered in this category. These are installed, for example, in the sub-distributors of individual floors. Surge arresters also limit dangerous transient overvoltages caused by switching motors, transformers, circuit breakers or inductive loads. Disturbances of this type are short-lived, cause the voltage to rise very quickly, and can occur more frequently. The interference causes electronic devices to wear out faster.Type 3 overvoltage protection further reduces the remaining overvoltage and is installed as fine protection as close as possible to the end devices to be protected.What should you pay attention to when buying a surge arrester?You now know what parts make up a lightning protection system with overvoltage protection. Surge protection has been a mandatory part of an electrical system in Germany since December 2018 and must be installed in new buildings. Include this topic in the planning of your building or system and pay attention to high-quality components. Don't skimp on security. Retrofitting is also advisable for older buildings, because there are more and more devices with sensitive electronics in our households. When buying, pay particular attention to:mounting typeRated voltage AC/DCHighest continuous voltage for AC and DCnumber of polesprotection leveland other properties A comparison with your electrical installation and your evaluation of the protection needs of certain sensitive devices in your possession will help you to find the right surge arrester. Save hereCombination devices combine type 1, type 2 and type 3 lightning protection and surge protection in a single device. This ensures comprehensive protection in an easy-to-install manner. At eibabo you can get a large selection of surge arresters in different designs, for example as lightning arresters, residual current circuit breakers with overvoltage protection, surge controllers or as overvoltage protection devices. Well-known manufacturers include ABB, Dehn, Eaton, Hager, Hensel, OBO, Phoenix, Siemens and Weidmüller.  Catalogue content:In this eibabo® catalogue Earthing, lightning and surge protection > Surge protection device for power supply systems you will find items from the following product groups:Item overview:BusbarCenter protectionCircuit breakerCombination workerComplete blockComplete unitDevice protectionEnergy diverterEnergy TechnologyFine protectionFuse holderLightning arresterMains protection deviceMains surge protectionOvercurrent protectionOvercurrent protection deviceOverloadOvervoltage protectionPhotovoltaic arresterReplacement moduleSignal protectionSpark gapSurge Device ProtectionSurge protection deviceSurge Protection EnclosureSurge protection moduleSystem solutionTerminal blockfrom the following manufacturers:Manufacturer overview catalogue Surge protector - electr.:ABBDEHNEatonFinderHagerHenselMersenOBOPhoenixPröpsterSchneider ElectricSiemensWAGOWeidmüller
Universal metering device - With combination measuring devices, you always have a clear view of your current consumption or performance parameters. In this category of your eibabo® online shop, we present many different multifunction devices for measuring electrical quantities. Depending on the design and equipment, the devices provide you with comprehensive information about your electrical installation and power distribution.These devices provide measured values in order to be able to assess the condition of the system itself and the network quality. You can also process this measurement data further. Thanks to a wide range of interfaces and communication options, integration into higher-level automation systems and energy management systems is possible.Image: Siemens 7KM2200-2EA40-1JB1 SENTRON measuring deviceWhat are combination meters?The designation 'combined measuring devices' in this catalog of our shop mainly refers to devices for fixed DIN rail mounting in the control cabinet, which combine different measuring functions. These mainly include the functions as an ammeter (current measuring device), reactive power meter, tachometer, frequency meter, pulse counter, voltmeter (voltage measuring device) and active power meter. TIPAs a global company, we ship your order quickly, safely and reliably worldwide. Use one of over 20 secure payment methods. So: 'What do I want to measure?' This is the basic question you need to ask yourself before purchasing a combination meter. We offer you numerous measuring instruments. Many only measure individual electrical parameters, others record different measured variables. If, for example, measurements are only made on a single phase, an instrument for measuring voltage, current, frequency or phase angle will certainly already meet all requirements. If you want to measure other parameters such as energy consumption, you can integrate a multifunction device into your electrical system. Select the measuring device according to your requirements.In the following, we briefly present the most important measured variables in more detail.What does an ammeter measure?An ammeter is a device for measuring current in AC circuits or DC circuits. Ammeters are connected in series in a circuit and have a very low internal resistance in order not to falsify the current data of the circuit being measured. The measurement data is usually given in amperes (A), milliamperes (mA), microamperes (?A).What does a voltmeter measure?In contrast to the ammeter, a voltmeter has an infinite resistance and is connected in parallel in the circuit. It is used to measure the voltage (electrical potential difference) in a specific section of a circuit. The voltmeter displays the reading in volts.What does a tachometer measure?The tachometer is an instrument that measures the rotational speed of a shaft or disk in engines and other machines. Such a device is used to measure a variety of objects and performance metrics, including:the revolutions of wheels, rollers, motors, shafts, fans, ventilators or turbinesthe speed of moving objects such as cars, airplanes, conveyor belts, conveyor belts or elevatorsthe dimensions of workpieces such as wires, cables, rolled sheets and the like What does a frequency meter measure?Frequency is one of the main indicators of electric current. A frequency meter is a special measuring device for determining the frequency of electrical AC voltage. Depending on the application, the device can be used to measure sinusoidal AC voltages or square-wave signals. The device thus measures the period of oscillation of an electrical signal and determines the number of oscillations for a specific time cycle. Frequency is measured in Hertz and is inversely proportional to the period of oscillation. As a rule, all devices powered by electricity must be operated with currents of a certain frequency. That is why devices for determining the frequency of the flowing current are so important. The measurement results are used to monitor the correct functioning of connected devices and the progress of technological processes.What does a pulse counter measure?Active power meters and reactive power meters are used when you want to evaluate the efficiency of your installation and the consumption costs. The amount of energy required by an electrical consumer is normally calculated from the total power of the electrical current flowing through the circuit. A distinction is made between two indicators that reflect the costs of operating the consumer. These indicators are called active energy and reactive energy.Already knewAs a consumer, you do not pay for the power you use, but for the full power released by your supplier. These two measured variables are therefore also differentiated in the units of measurement. Total power is measured in volt-amperes (VA) and net power in kilowatts (kW).What does that mean? The active part of the total power does the useful work and is converted into the types of energy that your electrical consumer needs. Reactive power is that part of the total power consumption that is not used for useful work. In AC circuits, the reactive component always occurs when there is an inductive or capacitive load. In this case there is a mismatch between the phase of the current and the phase of the voltage. Due to this phase shift between voltage and current, only part of the full power reaches the consumer. The main losses arise from the useless heating of equipment during operation. By using these measuring devices, you record the value of the energy used or lost. It followsThere is no reactive energy in circuits in which direct current flows. Measuring devices of this type are not required here. Use the universal measuring devices to get a complete overview of your installation. All devices from the eibabo® shop work reliably and precisely. You get the highest quality from brands such as Hager, Janitza, NZR, Panta, Phoenix, Schneider Electric, Siemens and Weidmüller. Use the detailed search to filter certain properties and quickly find the right device.  Catalogue content:In this eibabo® catalogue Devices for distribution board- / surface mounting > Multifunction measuring instrument you will find items from the following product groups:Item overview:Active power meterAmmeterCombination meterControl cabinet measuring deviceFrequency meterIndustrial measuring deviceMonitoringMultimeterPanel meterPulse counterReactive power meterTachometerfrom the following manufacturers:Manufacturer overview catalogue Universal metering device:HagerJanitzaPantaPhoenixSchneider ElectricSiemensWeidmüller
Protective conductor terminal - You take care of the structure of your control cabinet and use various terminal blocks to organize your electrical installation. If you are still missing protective conductor terminals to complete your system, then you have come to the right place in this catalog from our shop. Here you can get all common variants from well-known manufacturers at top conditions. Protective earth terminals belong to the series terminals and were developed for electrical distribution installation. These are capable of accommodating fine-wire, multi-wire or solid conductor cross-sections. Cables with attached ferrules can also be installed in protective conductor terminals.What is a protective conductor?The protective conductor or PE conductor (PE stands for protective earth) is primarily used to connect the masses of electrical devices and conductive elements to earth. The protective conductor is easily recognizable by its green-yellow color.Already knewThe nationwide establishment of the protective conductor in Germany, Austria and Switzerland took several decades. More than 50 years passed from the first proposal to introduce a 'neutral conductor' around 1914 to the uniform definition of the green and yellow marking in 1965.An example: Let's take the classic NYM-J 3x1.5 mm² sheathed cable. Two wires carry current here, the one with the blue insulation and the one with the brown insulation. The third wire is the green-yellow protective conductor, which normally does not carry any current. If a current-carrying phase touches a metallic housing, a so-called residual current flows through it. If there is no protective conductor, the housing is not grounded and the residual current cannot flow. If a person touches the housing, the current is returned to earth via their body. This not only results in an unpleasant discharge, but in some cases leads to burns or, in extreme cases, to an electric shock, which can lead to cardiac arrest. However, if a protective conductor is properly installed, the enclosure is connected to earth through it. The residual current can thus flow off via the protective conductor.In the control cabinet, the incoming protective conductors are sorted and fastened via protective conductor terminals.What is a terminal block or a feed-through terminal block for protective conductors?Terminal blocks fulfill several functions and are among the most important components within a control cabinet. It is mounted on the DIN rail. In general, terminal blocks are connecting elements between the incoming cables and lines of an installation and the actual control cabinet installation. Technically, the special protective conductor clamps do not differ from the clamps for external conductors or neutral conductors, but they are specially designed to accommodate the green-yellow protective conductor. TIPMany ground terminals also have a coloured, mostly green-yellow housing. Their purpose is therefore unmistakable and the terminals in the control cabinet can be recognized as such at first glance. Feed-through terminals are also often mentioned. 'Terminal block' is a generic term that also includes other types of terminals. These include, for example, fuse terminals and relay terminals. Other terms describe the way a terminal is constructed or its ability to connect the conductors. In this context one often hears about one-tier terminals, three-tier terminals, spring-loaded terminals, push-in terminals or screw terminals.Why should I use protective conductor terminals?Feed-through terminals for protective conductors are required connecting elements in the control cabinet between the rigid incoming cables or lines and the following control cabinet installation. These offer the necessary flexibility to connect the protective conductors to the end devices easily and clearly. A clear installation would not be possible without the feed-through terminals. In practice, the incoming cables and lines are clearly laid out on the terminals and the individual wires then lead from there to the devices in the control cabinet. This keeps the entire installation flexible. There are connection points and nodes for checking and changing the system structure.Image: WAGO 2002-3207 three-level terminalEach protective conductor connection that is made assumes a protective function specified in the circuit diagram. This means that both the installation of the system and the function of individual connections are always traceable. This makes later maintenance, additions or repairs easier. Changes are possible at any time by reconnecting individual lines. The rigid supply lines remain unaffected.What is the difference between protective conductor terminals?Each manufacturer builds the protective conductor terminals slightly differently. However, the principle is the same. There are single-level clamps and multi-level clamps. While you can only connect one protective wire in the single-level terminal, several incoming and outgoing lines can be installed in multi-level terminals. A multi-level arrangement saves an enormous amount of space in the control cabinet.Another distinguishing feature is the way the wires are attached. With a screw terminal, the respective wire is fixed with a screw connection. This method is comparatively complex and takes a lot of time. Especially when the system is complex, you save a lot of time by using a spring-loaded terminal. This variant makes the electrical contact using a spring. The spring usually consists of a bent, flat copper contact. The protective conductor must be inserted through a hole in the copper contact. This is only possible if the contact is clamped with a pointed tool. When the clamping tool is removed, the spring pulls back and the protective conductor is jammed. This connection is released in the same way. Push-in mounting is another connection variant. This is similar to the spring-loaded terminal. But unlike the spring-loaded connection, installation is tool-free and therefore even faster. The protective conductor is inserted into the spring shaft of the terminal and the spring locks automatically. You need a tool to loosen the connection. Bend the retaining spring to the side with a small screwdriver and the protective conductor can be loosened. This method saves a lot of time, especially for cores with solid conductors. The use of ferrules is recommended for cores with flexible conductors (strands). Fastening the conductors using insulation displacement terminals is rather rare. Use this variant if your conductors are particularly thin. Here, the contact is made through a small cut in the insulation. Cheaper in a setProtective conductor terminal blocks are available individually or in sets of 25, 40 or 50 at an attractive price advantage. The cross-section of the protective conductor also affects the protective conductor terminal. Here in the shop you can get the right protective conductor terminals for all common cable cross-sections. Whether a clamp can be used for a specific cross-section is usually stated on the clamp.Why are protective conductor terminals not closed on one side?The space in a control cabinet is almost always tight. The storage capacity of a control cabinet is generally specified in module widths (HP). Protective conductor terminals are not manufactured according to this grid dimension, but as narrow as possible. The width is determined by the design of the electrical connection and the cable cross-section. Since the terminals are mounted directly in line, there is no risk of touching the contacts on the open sides. Without the second side cover, a terminal is slightly narrower. A cover is only attached to the last terminal in a row. The narrower the individual terminal is, the more terminals can be accommodated on a specific section of the DIN rail.You can buy protective conductor terminals quickly and cheaply in the eibabo® technology store ? your competence center for smart homes and electrical installations. We offer branded products from ABB, Dehn, Hager, Phoenix, Pollmann, Schneider Electric, Siemens, WAGO, Weidmüller, Wieland in large quantities. We deliver our range worldwide.  Catalogue content:In this eibabo® catalogue Terminal blocks > Ground terminal block you will find items from the following product groups:Item overview:Actuator terminalBase clampsBuilt-in housingCage clampConnection technologyFeed terminalFeed-through terminal blockFour-level clampGround railGround terminalGround wire disconnect terminalInformation technologyInitiator terminalInstallation clampInstallation clampsMulti-level clampProtective conductorShield connection technologySingle clampSpring clampsSpring clipTerminal blocksTerminal stripTest disconnect terminalsThree-wire terminalThrough terminalTwin clampUniversal clampfrom the following manufacturers:Manufacturer overview catalogue Protective conductor terminal:ABBDehnHagerPhoenixPollmannSchneider ElectricSiemensWAGOWeidmüllerWieland
Inductive proximity switch - Are you interested in an inductive proximity switch and would you like to learn more about how it works and areas of application? Would you like to buy an inductive proximity switch and are you looking for a reliable supplier with a large selection at top conditions? In addition to information, the eibabo® shop also offers you high-quality articles in the field of Smart Home, lighting, switch programs and electrical material. Of course, this also includes inductive proximity switches and many other types of position switches and limit switches.What are inductive proximity switches?Inductive proximity switches are used to detect metal objects in the working area of a sensor and to signal this by changing the switching status.StoryThe physicist Michael Faraday first described the principle of electromagnetic induction in 1831. He found that changing magnetic fields create electric current.Proximity sensors are used for automatic non-contact detection of metallic objects for various industrial purposes and work reliably even under difficult conditions and various external influences. When the sensor is supplied with electricity, a magnetic coil inside generates an alternating magnetic field. This magnetic field is the working range of the sensor. The principle of operation is based on the phenomenon of change in vibration amplitude caused by a ferromagnetic, magnetic or metal object of a certain size in the working area of the sensor. If you bring a metal object into this area, the eddy currents induced in the metal lead to a change in the original oscillation amplitude of the coil. The intensity of the change depends on the distance between the metal object and the sensor. This change is presented as an analog signal and is converted into a logic signal with a corresponding value. The switch itself is a semiconductor converter, which controls the circuit to be executed depending on the position of the object.How are inductive proximity switches constructed?The electrical part of the sensor is typically housed in a threaded metallic cylindrical housing or a rectangular plastic housing. The cylindrical metal housing is assembled using the thread. To do this, they are attached to bores in mounting plates using nuts or screwed directly into the sockets provided for this purpose. The sensors with a rectangular housing are fastened with screws at the place of use. In order to be able to withstand the conditions of the industrial environment, the technology is usually surrounded by a protective sealant. TIPThe electromagnetic field of the inductive proximity switch is very weak and harmless to human health. The switches are available for both flush and non-flush mounting. Flush sensors can be mounted without protruding beyond the mounting surface. However, these generally have a shorter sensing range or more restricted working range than non-flush sensors.What properties do inductive proximity switches offer?The properties of the inductive proximity switches can vary depending on the model, manufacturer, structure and equipment. In general, the devices offer the following functions and properties:reaction to metal onlyInsensitivity to other materialsTightness against water and dust / correspondingly high degree of protectionReliability and durability because the switch's working surface is not in contact with the objectCompact dimensions and low weightTrip indicator LED Image: Schneider Electric XSAV11801 speed monitorWhere are inductive proximity switches used?Inductive proximity switches are robust and withstand shock, moisture, vibration and dirt. Within an automation process, inductive proximity switches work as the primary control elements, taking into account the position of certain metallic, moving objects. Proximity switches are used particularly frequently on assembly lines in special machine construction and plant construction. These are used there, among other things, for counting and tracking metal objects. But the devices are also used in warehouse logistics and conveyor technology, in the packaging industry and in the automotive sector. Depending on the application, the signals from the proximity switch are evaluated by a counter, a motion controller, an alarm system or other devices. In addition to numerous other functions, the following are also:distance measurements madeMaterial thicknesses and material widths determinedChecked surface texturePosition checks carried outCounting tasks taken over The classic example are bottles with crown caps or beverage cans, which are transported past the sensor and counted on a conveyor belt.What errors can occur with inductive proximity switches?The reliability of the measurements of an inductive proximity sensor depends on its properties, the way it is used, the installation and the nature of the objects to be detected. The two main errors are:The item is not recognizedIf the object is not detected, please check the sensor properties and all distances. Pay attention to the switching distances and the switching function (opener or closer). Is the correct operating voltage present? Is the item made of metal? Is the item big enough? Is the object moving too quickly through the work area?The sensor switches too early or too lateIf the switching time is not correct, this is often due to critical environmental conditions or electromagnetic interference signals. Is the sensor installed correctly (flush or non-flush)? Were other installation conditions observed? Are other switches that are in the immediate vicinity interfering? Is the sensor dirty? Check if other metals affect the work area.The inductive proximity switches in the eibabo® range are all of high quality and are therefore also suitable for your planned application. Well-known brand manufacturers for inductive proximity switches are Baumer, Dietz, Festo, Kisling, Leuze, Metz, Pilz, Rockwell, Turck, Weidmüller and many others.  Catalogue content:In this eibabo® catalogue Sensors > Inductive proximity switch you will find items from the following product groups:Item overview:Analog sensorCable sensorCuboid sensorDC voltage sensorFour-wire sensorInductive sensorObject detectionPlug sensorProximity initiatorProximity switchRound sensorThread sensorThree-wire sensorUniversal voltage sensorUprox sensorfrom the following manufacturers:Manufacturer overview catalogue Inductive proximity switch:BaumerBernsteinDi-soricDietzEatonEGE-ElektronikElobauFestoGavazziHengstlerIfm ElectronicIpf ElectronicKisslingKlaschkaLandefeldLeuzeMetzOmronPepperl + FuchsPilzRockwellSchmersalSchneider ElectricSensopartSickTurckWeidmüller
Crimping tool - Tired of frayed cable ends? Would you like to securely attach cable lugs or ferrules so that your wires are permanently fixed in screw terminals or spring terminals? With the high-quality pressing tools from the eibabo® shop, well-functioning contact connections can be made in no time at all. Manual, battery-powered and electric, hydraulic or pneumatic crimping tools are in daily use and are part of the basic equipment of a good electrician. Even the private do-it-yourselfer achieves better results if the tools used are easy to use and precisely cut, strip or press. In this article, we will introduce you to the most important pressing tools and give tips on what to look out for when buying one. Here you will find numerous high-quality crimping pliers, cable lug pliers, notched pliers, contact crimping pliers and other crimping tools at top conditions. All products in the shop are often used by us and our partners for years and can be recommended without reservation.What is crimping?Most of the items presented here are special tools for performing a wide variety of activities. But they all have one thing in common: the tools create a connection between two components by plastically deforming them. This deformation can be caused by pressing, squeezing, piercing, flanging or folding and is referred to as 'crimping'. All of these tools are by definition crimping tools, although 'crimping pliers' are often referred to as a separate product group. We mainly use the term 'press tools'.What is the difference between pressing tools?Pressing tools are different devices that permanently connect two materials or components through deformation. One of the most common applications is attaching connectors to the end of electrical wires. But many pressing tools are multifunctional. Depending on the application, you can also bend, cut or strip materials with it. The tools are designed in such a way that they are suitable for specific cable diameters, conductor cross-sections or pipe sizes in order to guarantee secure connections. There is typically no provision for the connections to be released.The biggest difference between the individual pressing tools lies in the type of function or operation. Each type has its advantages and disadvantages. When machining smaller components, for example, precision is often important. It is best to use a manually operated pressing tool here. When you need more power, hydraulic and electric models make your job easier.hand toolsManual devices are often small, light and intended for the tool case. These are in the form of pliers and are suitable for daily use on the construction site and for processing smaller components.Equipment for the workbenchBench tools are the opposite of manual tools. These are big and heavy and have power. Permanently mounted on the workbench, these can be operated electrically or manually with levers and rotary devices. Good to knowWith the manual and battery-operated devices from our shop, you are already optimally equipped for conventional electrical installations. More complex tools are more for commercial and industrial use. Electrical appliancesElectrically operated pressing tools are usually equipped with rechargeable batteries and do the work without much effort. Wired models are rare. Although these devices are not for the pocket, they are intended for mobile use on the construction site.Pneumatic pressing toolsPneumatically operated pressing tools require little effort. The compression force is provided by compressed air. These devices offer maximum performance and are suitable for demanding installations, repair services and maintenance work. Here we distinguish between small mobile devices and permanently installed models for the workshop.Hydraulic pressing toolsThese models are similar to the pneumatic variants. Here, too, there are mobile and fixed pressing tools. However, the compression force is provided by hydraulic fluid.The pliers for ferrulesA bare and unprotected wire end is not optimal for the connection with screw terminals, spring terminals or similar. This applies in particular to flexible strands, which consist of many thin wires. These ends will fray in screw terminals, become damaged, and lack the strength to be plugged into spring terminals. Wire-end ferrules were developed for this purpose, which give the wire a firm shape and improve the resistance of the wires to oxidation. This increases the longevity and reliability of a connection. A ferrule is a soft metal tube that is crimped onto the end of a stripped wire. Most ferrules are made of copper and are tinned, sometimes gold or silver plated. This serves to protect against corrosion. The diameter and length of a ferrule is determined by the thickness of the wire.NoticeFerrules are color coded for the maximum wire sizes. However, there are different, sometimes contradicting color codes. Please ensure the correct size to ensure secure connections.A ferrule is usually wider on one side to make it easier to put it on the wire. This side is covered with a plastic cable entry sleeve (protective collar). The protective collar serves as a transition between the core insulation and the ferrule. The ferrule pliers only crimp the copper part with the wire while leaving the plastic sleeve around the insulation undamaged.cable lug pliersIn addition to ferrules, cable lugs are often attached to the wires. Cable lugs are similar to ferrules. While a ferrule only encloses and protects the wire, cable lugs also have a special attachment option for the cable. This can be, for example:Ring Eyelets: The connection part consists of a flat contact surface and is in the form of an annular eyelet completely closed in a circle. There are versions with one hole or multiple holes. Cable lugs with multiple holes prevent rotation or movement of the cable lug.Clevis: The connecting portion of a fork is in the shape of a two-pronged fork. The connection point here is not a circular closed hole, but open on one side.Special shapes: There are cable lugs in special shapes, such as flat contact surfaces (with and without side guides) for sliding onto suitable mating contacts. TIP:Multifunction tools offer the option of changing the press inserts. Among other things, this allows you to process various wire-end ferrules and cable lugs with just one device. Choosing the right cable lug (and thus the choice of the correct cable lug pliers) also depends on the conductor class. You can find more information in the category 'cable lugs'.RJ45 crimping pliersRJ45 crimping pliers are specially designed for processing non-assembled network cables and telephone lines. The pliers are used to press the Western plug (RJ45) with the inserted wires of the cables. These pliers often have an integrated flat cable cutter and a possibility for stripping.Are there pressing tools for extremely thin wire cross-sections?Working with particularly thin cables does not forgive any mistakes. Problems can even arise with the classic manual press tools. For such requirements, use a press tool with a ratchet lock. This locking device in connection with an automatic cross-section adjustment controls the pressing process. Human errors are excluded and uniformly controlled pressing results are guaranteed.Can I squeeze wire ends with pliers?The pressing and squeezing of ferrules or cable lugs with conventional pliers is not recommended. You cannot produce a safe, clean and durable cold-weld joint with it. A bad crimping result means, for example, that the sleeve or the cable lug is loose and comes off. Air and moisture could enter the connection. Then corrosion occurs and the electrical conductivity would be impaired.Image: Klauke K 05 D pressing toolIsn't soldering much more stable than pressing?A proper press connection usually provides a stronger and more reliable connection than soldering. Soldered joints can break under certain circumstances, while pressed cable ends are significantly more robust. Press connections can be made more easily with cables and lines that have already been laid. Soldering in dark and hard-to-reach places is difficult.How do I release a press connection?It is not intended to release a press connection again. If you undo a press fit, the second try is unlikely to hold reliably. In these cases, shorten the cable or line and make a new press connection.Which pressing tools are the best?Professionals and ambitious do-it-yourselfers will find professional-quality crimping tools and tools for crimping, cutting and stripping at eibabo®. In addition to pressing tools of all kinds, we also have a wide range of accessories, spare parts and additional parts in our range. The pressing tools available here offer you efficient, high-quality technology. Well-known manufacturers include Cimco, Wiha, Klauke, Weidmüller, Harting, Knipex, Phoenix Contact as well as ABB Stotz and WAGO Kontakttechnik.  Catalogue content:In this eibabo® catalogue Tools (Press, cut and isolate) > Crimp tool cable lugs, cable end sleeves, screen connection you will find items from the following product groups:Item overview:Arbor press pliersBattery pressCable lug pliersClicknCrimpConnecting sleeveConnection toolsConnectorCordless cutterCrimp toolCutting toolFerrulesFinder springFour-indent crimping pliersFront pressing pliersHand toolHydraulic press headManual hydraulicsPneumatic toolPress diePress insertPressing pliers setPressing toolRoller press pliersSpecial toolStripping toolUniversal crimping pliersWire end pliersWire stripperfrom the following manufacturers:Manufacturer overview catalogue Crimping tool:ABBCimcoEricoHartingIntercableIntercable ToolsKlaukeKnipexLappPhoenixRittalSchneider ElectricStäubliTE Con.Energy+Ind/EUWAGOWeidmüllerWielandWiha
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