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Showing Results For: Surge Protection Devices

Surge Protection Devices

Surge protection devices, or SPDs, are safety devices designed to protect electrical equipment from electrical surges, generally referred to as transient overvoltages, running across the system. Transients, a safety hazard, can significantly damage the device. These transient overvoltages are overcome due to the surge protectors that conduct them to the earth, thus limiting the voltage to normal.

Where are surge protection devices installed?

Normally, SPDs are installed within consumer units; however, they can also be set up in a separate enclosure in the case of limited space.

What are transient overvoltages? How are they produced?

Transient overvoltages are short-term electric surges that result from abrupt energy release through alternate ways. They are generated either naturally by lightning strikes, switching sources, or man-made.  

What are the types of surge protection devices?

SPDs are classified into four main types, including: 

  • Surge protection modules

These surge protector modules protect point-of-use devices, allowing protection against current spikes and overvoltages.

  • Branch surge panels 

These panels are prefixed to the service entrance load side and are designed to protect against internally produced and motor-driven surges.

  • Secondary surge arresters 

They are preinstalled on the service panel’s line side and are responsible for protecting against switching or lightning events.

  • Power strips

These strips are designed to significantly protect sensitive (with lower voltage & ampere) electronics by blocking current spikes. 

Applications of surge protection devices:

SPDs are suited for the protection of a wide variety of electronic devices in specific applications, such as: 

  • Computers
  • TVs
  • Safety Circuits
  • Washing Machines
  • Distribution System
  • Industrial Systems
  • Power Distribution Panels.

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Enrgtech #
Manufacturer Part No
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Phoenix Contact
Rohs Verified
2905988, Phoenix Contact
1 In Stock
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1 +
£ 856.03
Schneider Electric
Rohs Verified
A9L16617, Schneider Electric
3 In Stock
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1 +
£ 249.44
3RT2916-1JK00, Siemens
50 In Stock
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1 +
£ 9.64
Okaya Electric Industries
Rohs Verified
LV480DI-U4, Okaya Electric Industries
7 In Stock
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£ 43.31
5 +
£ 41.58
10 +
£ 39.42
Schneider Electric
LAD4DDL, Schneider Electric
6 In Stock
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£ 17.40
Schneider Electric
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A9L16300, Schneider Electric
1 In Stock
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£ 624.76
3RT2926-1CE00, Siemens
3 In Stock
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1 +
£ 12.70
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3RT2936-1ER00, Siemens
2 In Stock
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£ 22.08
Schneider Electric
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A9L16618, Schneider Electric
1 In Stock
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£ 388.16
Schneider Electric
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A9L16296, Schneider Electric
1 In Stock
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£ 439.76
Rohs Verified
SPD-10-275-P5-G2, Osram
38 In Stock
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£ 9.28
5 +
£ 8.82
10 +
£ 8.38
Rohs Verified
SPD-20-275-P5-G2, Osram
30 In Stock
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£ 10.40
5 +
£ 9.88
10 +
£ 9.38
Rohs Verified
2CTB802346R2900, ABB
1 In Stock
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1 +
£ 558.39
Rohs Verified
3RT2936-1BD00, Siemens
7 In Stock
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1 +
£ 10.92
Schneider Electric
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A9L40281, Schneider Electric
1 In Stock
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£ 893.43
Siemens
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3TX7402-3G, Siemens
2 In Stock
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£ 11.78
Siemens
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5SD7463-0, Siemens
7 In Stock
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£ 206.74
Schneider Electric
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A9L65501, Schneider Electric
2 In Stock
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£ 967.00
Schneider Electric
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A9L16310, Schneider Electric
2 In Stock
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£ 267.82
Rohs Verified
102036 FAZ-XAA-NA110-415VAC, Eaton
2 In Stock
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1 +
£ 31.73
3RT2926-1CB00, Siemens
16 In Stock
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1 +
£ 11.24
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3RT2926-1JL00, Siemens
24 In Stock
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1 +
£ 11.55
Siemens
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5SD7432-7, Siemens
1 In Stock
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£ 149.27
Rohs Verified
278519 FAZ-XAA-C-110-415VAC, Eaton
11 In Stock
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£ 52.50
Schneider Electric
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A9L65601, Schneider Electric
1 In Stock
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£ 1501.98
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New Items
New items
2905988, Phoenix Contact

2905988, Phoenix Contact

Phoenix Contact Lightning Arresters The FLT-SEC lightning arresters combine surge protection and backup fuse in a single connectors. It is no longer necessary to install a separate arrester backup fuse; this save space and reduces installation costs. Industrial Circuit Protection
New items
A9L16617, Schneider Electric

A9L16617, Schneider Electric

Acti9 iPRD Quick Surge Arresters Acti 9 iPRD DIN rail Surge Protector Devices are geared to absolute safety and improved continuity of service Maximum discharge current 8 to 65 kA Integrated disconnector for short-circuit current withstand, Isc, up to 25 kA Maximum steady state voltage, Uc = 260, 440 V Fixed or withdrawable surge arresters Surge Protection Devices, SPDs (DIN-rail) Voltage surges, often referred to as spikes or transients are typically caused by switching of fluorescent lights, fuses blowing or nearby lightning activity. The worst voltage surges are usually caused by lightning and can reach up to 6000V, with current surges of over 3000A. The maximum size of the voltage and current surges depends on the location within the building's wiring system. BS7671: 2011 Amendment 1 Sections 443 and 534 cover risk assessment and provides guidance on protection of electronic equipment for installation engineers to follow. The fullest information on lightning and surge protection comes from the BSEN 62305 series of standards.
New items
3RT2916-1JK00, Siemens

3RT2916-1JK00, Siemens

Surge Suppressors A selection of Surge Suppressors for use with the SIRIUS range of Contactors Siemens Sirius Range Contactor & Control Relays Siemens control gear for feeders up to 5.5kW. The complementary nature of the devices allows fast and simple assembly, for example, of motor starters and reversers. A perfect match between contactors, overloads, circuit breakers and accessories for the same power ratings provides a uniform panel appearance and the standard widths with no side-by-side mounting derating allows for space saving.
New items
LV480DI-U4, Okaya Electric Industries

LV480DI-U4, Okaya Electric Industries

SPD with a fail safe function to prevent short-circuit (separation of circuit and element is visually confirmable). Protection against lightning surge for single/three phase power supplies. Quick response for surge. Impulse current capacity 8/20μs-5000A. Applications Tapping machines, NC machines, other machine tools Lithography equipment, washing devices, IC testers Injection molding machines, winding machines, surface mounters Vehicle air conditioners Servo amplifiers Electric facilities or other industrial equipment
New items
LAD4DDL, Schneider Electric

LAD4DDL, Schneider Electric

Anti-Interference Modules Series LA4 Modules to fit on the upper section of switches LC1D and LP1. Modules fitted with foolproofing devices. Schneider Electric d2 Range Accessories
New items
A9L16300, Schneider Electric

A9L16300, Schneider Electric

Acti9 iPRD Quick Surge Arresters Acti 9 iPRD DIN rail Surge Protector Devices are geared to absolute safety and improved continuity of service Maximum discharge current 8 to 65 kA Integrated disconnector for short-circuit current withstand, Isc, up to 25 kA Maximum steady state voltage, Uc = 260, 440 V Fixed or withdrawable surge arresters Surge Protection Devices, SPDs (DIN-rail) Voltage surges, often referred to as spikes or transients are typically caused by switching of fluorescent lights, fuses blowing or nearby lightning activity. The worst voltage surges are usually caused by lightning and can reach up to 6000V, with current surges of over 3000A. The maximum size of the voltage and current surges depends on the location within the building's wiring system. BS7671: 2011 Amendment 1 Sections 443 and 534 cover risk assessment and provides guidance on protection of electronic equipment for installation engineers to follow. The fullest information on lightning and surge protection comes from the BSEN 62305 series of standards.
New items
3RT2926-1CE00, Siemens

3RT2926-1CE00, Siemens

Surge Suppressors A selection of Surge Suppressors for use with the SIRIUS range of Contactors Siemens Sirius Range Contactor & Control Relays Siemens control gear for feeders up to 5.5kW. The complementary nature of the devices allows fast and simple assembly, for example, of motor starters and reversers. A perfect match between contactors, overloads, circuit breakers and accessories for the same power ratings provides a uniform panel appearance and the standard widths with no side-by-side mounting derating allows for space saving.
New items
3RT2936-1ER00, Siemens

3RT2936-1ER00, Siemens

Surge Suppressors A selection of Surge Suppressors for use with the SIRIUS range of Contactors Siemens Sirius Range Contactor & Control Relays Siemens control gear for feeders up to 5.5kW. The complementary nature of the devices allows fast and simple assembly, for example, of motor starters and reversers. A perfect match between contactors, overloads, circuit breakers and accessories for the same power ratings provides a uniform panel appearance and the standard widths with no side-by-side mounting derating allows for space saving.
New items
A9L16618, Schneider Electric

A9L16618, Schneider Electric

Acti9 iPRD Quick Surge Arresters Acti 9 iPRD DIN rail Surge Protector Devices are geared to absolute safety and improved continuity of service Maximum discharge current 8 to 65 kA Integrated disconnector for short-circuit current withstand, Isc, up to 25 kA Maximum steady state voltage, Uc = 260, 440 V Fixed or withdrawable surge arresters Surge Protection Devices, SPDs (DIN-rail) Voltage surges, often referred to as spikes or transients are typically caused by switching of fluorescent lights, fuses blowing or nearby lightning activity. The worst voltage surges are usually caused by lightning and can reach up to 6000V, with current surges of over 3000A. The maximum size of the voltage and current surges depends on the location within the building's wiring system. BS7671: 2011 Amendment 1 Sections 443 and 534 cover risk assessment and provides guidance on protection of electronic equipment for installation engineers to follow. The fullest information on lightning and surge protection comes from the BSEN 62305 series of standards.
New items
A9L16296, Schneider Electric

A9L16296, Schneider Electric

Acti9 iPRD Quick Surge Arresters Acti 9 iPRD DIN rail Surge Protector Devices are geared to absolute safety and improved continuity of service Maximum discharge current 8 to 65 kA Integrated disconnector for short-circuit current withstand, Isc, up to 25 kA Maximum steady state voltage, Uc = 260, 440 V Fixed or withdrawable surge arresters Surge Protection Devices, SPDs (DIN-rail) Voltage surges, often referred to as spikes or transients are typically caused by switching of fluorescent lights, fuses blowing or nearby lightning activity. The worst voltage surges are usually caused by lightning and can reach up to 6000V, with current surges of over 3000A. The maximum size of the voltage and current surges depends on the location within the building's wiring system. BS7671: 2011 Amendment 1 Sections 443 and 534 cover risk assessment and provides guidance on protection of electronic equipment for installation engineers to follow. The fullest information on lightning and surge protection comes from the BSEN 62305 series of standards.
New items
SPD-10-275-P5-G2, Osram

SPD-10-275-P5-G2, Osram

The Osram SPD series surge protector which has low maintenance effort. It is suitable for luminaries of protection class I/II and has several protection level options for different applications. Failure indication LED Mains voltage up to 275 V Voltage protection level for connected LED driver <2 kV Push-in terminal
New items
SPD-20-275-P5-G2, Osram

SPD-20-275-P5-G2, Osram

The Osram SPD series surge protector which has low maintenance effort. It is suitable for luminaries of protection class I/II and has several protection level options for different applications. Failure indication LED Mains voltage up to 275 V Voltage protection level for connected LED driver <2 kV Push-in terminal
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