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 protection

In 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 protection
  • the internal lightning protection
  • the 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.

Source: eibabo®, Dehn DG M TNS 275 DEHNguard surge arresterImage: Dehn DG M TNS 275 DEHNguard surge arrester

The external lightning protection

External 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 mountain
  • is over 20 meters high
  • has 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 protection

There 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 protection

Overvoltage 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.

 


definition

The 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 type
  • Rated voltage AC/DC
  • Highest continuous voltage for AC and DC
  • number of poles
  • protection level
  • and 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 here

Combination 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.

 

eibabo - technology store

 

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:

  • Busbar
  • Center protection
  • Circuit breaker
  • Combination worker
  • Complete block
  • Complete unit
  • Device protection
  • Energy diverter
  • Energy Technology
  • Fine protection
  • Fuse holder
  • Lightning arrester
  • Mains protection device
  • Mains surge protection
  • Overcurrent protection
  • Overcurrent protection device
  • Overload
  • Overvoltage protection
  • Photovoltaic arrester
  • Replacement module
  • Signal protection
  • Spark gap
  • Surge Device Protection
  • Surge protection device
  • Surge Protection Enclosure
  • Surge protection module
  • System solution
  • Terminal block


from the following manufacturers:

Manufacturer overview catalogue Surge protector - electr.:

  • ABB
  • DEHN
  • Eaton
  • Finder
  • Hager
  • Hensel
  • Mersen
  • OBO
  • Phoenix
  • Pröpster
  • Schneider Electric
  • Siemens
  • WAGO
  • Weidmüller


 
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... read more »
Close window
Surge arrester electric

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 protection

In 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 protection
  • the internal lightning protection
  • the 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.

Source: eibabo®, Dehn DG M TNS 275 DEHNguard surge arresterImage: Dehn DG M TNS 275 DEHNguard surge arrester

The external lightning protection

External 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 mountain
  • is over 20 meters high
  • has 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 protection

There 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 protection

Overvoltage 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.

 


definition

The 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 type
  • Rated voltage AC/DC
  • Highest continuous voltage for AC and DC
  • number of poles
  • protection level
  • and 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 here

Combination 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.

 

eibabo - technology store

 

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:

  • Busbar
  • Center protection
  • Circuit breaker
  • Combination worker
  • Complete block
  • Complete unit
  • Device protection
  • Energy diverter
  • Energy Technology
  • Fine protection
  • Fuse holder
  • Lightning arrester
  • Mains protection device
  • Mains surge protection
  • Overcurrent protection
  • Overcurrent protection device
  • Overload
  • Overvoltage protection
  • Photovoltaic arrester
  • Replacement module
  • Signal protection
  • Spark gap
  • Surge Device Protection
  • Surge protection device
  • Surge Protection Enclosure
  • Surge protection module
  • System solution
  • Terminal block


from the following manufacturers:

Manufacturer overview catalogue Surge protector - electr.:

  • ABB
  • DEHN
  • Eaton
  • Finder
  • Hager
  • Hensel
  • Mersen
  • OBO
  • Phoenix
  • Pröpster
  • Schneider Electric
  • Siemens
  • WAGO
  • Weidmüller
Close filters
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
from to

1 From 68
No results were found for the filter!
RECOMMENDED
3D
ABB - OVRT24L40-275PQ - Surge protection type 2 TN-S 4P 20kA - Surge protection for power supply OVRT24L40-275PQ
9,064.76₹ excl. VAT

*

plus shipping
(28,262.82₹ RRP***)
Surge protection type 2 TN-S 4P 20kA - Surge protection for power supply
ABB
| OVRT24L40-275PQ
RECOMMENDED
3D
Dehn - DG M TT 2P 275 - Surge arrester DEHNguard - Surge protection for power supply DG M TT 2P 275
9,965.22₹ excl. VAT

*

plus shipping
(18,873.18₹ RRP***)
Surge arrester DEHNguard - Surge protection for power supply
Dehn
| DG M TT 2P 275
RECOMMENDED
3D
Schneider Electric - A9L40600 - Surge arrester 3p+N 350V - Surge protection for power supply A9L40600
6,196.22₹ excl. VAT

*

plus shipping
(30,516.33₹ RRP***)
Surge arrester 3p+N 350V - Surge protection for power supply
Schneider Electric
| A9L40600
RECOMMENDED
3D
Dehn - DG M TNS 275 - Surge arrester DEHNguard - Surge protection for power supply DG M TNS 275
7,534.25₹ excl. VAT

*

plus shipping
(32,459.99₹ RRP***)
Surge arrester DEHNguard - Surge protection for power supply
Dehn
| DG M TNS 275
RECOMMENDED
Returns
3D
Dehn - DG M TT 2P 275 - Überspannungsableiter DEHNguard DG M TT 2P 275
8,470.39₹ excl. VAT

*

plus shipping
(18,873.18₹ RRP***)
Surge arrester DEHNguard - Surge protection for power supply
Dehn
| DG M TT 2P 275
RECOMMENDED
3D
Weidmüller - VPU PV II 3 R 1000 - Surge arrester 1100V - Surge protection for power supply VPU PV II 3 R 1000
3,956.79₹ excl. VAT

*

plus shipping
(11,830.95₹ RRP***)
Surge arrester 1100V - Surge protection for power supply
Weidmüller
| VPU PV II 3 R 1000
RECOMMENDED
3D
ABB - OVRT23N40-275PQ - Surge protection type 2 TN-S 3P+N 20kA - Surge protection for power supply OVRT23N40-275PQ
9,132.36₹ excl. VAT

*

plus shipping
(30,610.23₹ RRP***)
Surge protection type 2 TN-S 3P+N 20kA - Surge protection for power supply
ABB
| OVRT23N40-275PQ
RECOMMENDED
3D
Dehn - DCOR L 2P 275 - Surge arrester type 2 DEHNcord - Surge protection for power supply DCOR L 2P 275
4,105.15₹ excl. VAT

*

plus shipping
(7,774.62₹ RRP***)
Surge arrester type 2 DEHNcord - Surge protection for power supply
Dehn
| DCOR L 2P 275
RECOMMENDED
3D
Dehn - DG M TN 275 FM - Surge arrester DEHNguard - Surge protection for power supply DG M TN 275 FM
10,262.88₹ excl. VAT

*

plus shipping
(19,436.55₹ RRP***)
Surge arrester DEHNguard - Surge protection for power supply
Dehn
| DG M TN 275 FM
RECOMMENDED
3D
Dehn - DG M TT 275 - Surge arrester DEHNguard DG M TT 275
8,586.83₹ excl. VAT

*

plus shipping
(35,079.70₹ RRP***)
Surge arrester DEHNguard
Dehn
| DG M TT 275
RECOMMENDED
3D
Hager - SPB413 - Surge arresters - Surge protection for power supply SPB413
14,115.45₹ excl. VAT

*

plus shipping
(29,952.95₹ RRP***)
Surge arresters - Surge protection for power supply
Hager
| SPB413
RECOMMENDED
3D
Dehn - DG M PV2 SCI 1000 - Surge arrester type 2 DEHNguard M PV - Surge protection for power supply DG M PV2 SCI 1000
21,655.33₹ excl. VAT

*

plus shipping
(41,013.95₹ RRP***)
Surge arrester type 2 DEHNguard M PV - Surge protection for power supply
Dehn
| DG M PV2 SCI 1000
1 From 68
Viewed from you