Surge Protection Devices

Surge protection devices help to protect devices and equipment against changes in the electrical current running through the system. Current spikes or transients can cause significant damage to equipment and is also a safety hazard. You can learn more in our complete guide to industrial surge protection.

What are surge protection devices used for?

Surge protection devices involve the use of surge suppressors or protectors and surge arresters.

Suppressors protect equipment from voltage spikes. They block or short to ground the current in, for instance, power distribution panels, process control systems and heavy industrial systems.

Arresters protect machinery from external occurrences that cause over-voltage transients like lightning strikes or switching events. These are installed in power transmission and distribution systems.

Types of surge protection devices

Four primary types of industrial surge protection exist:

  • Secondary surge arresters fixed to the line side of the service panel to protect against current surges from lightning or switching events.
  • Branch surge panels are fixed to the load side of the main service entrance and offer protection against motor driven and internally generated surges.
  • Power strips protect sensitive electronics with lower voltage and ampere capabilities by blocking current spikes.
  • Surge protection modules provide point-of-use protection by protecting against overvoltage and current spikes.

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Description Price Device Type Maximum Surge Current Voltage Protection Rating Range Mounting Style Series Electrical Phase Length Impulse Discharge Current Width Depth Minimum Operating Temperature Maximum Operating Temperature Dimensions
RS Stock No. 768-1192
Mfr. Part No.2762265
kr 3 186,52
Each
Units
Surge Protector 10kA - - DIN Rail MT-RS485 - 77.5mm 500A 47.6mm 54.9mm -40°C +60°C 77.5 x 47.6 x 54.9mm
RS Stock No. 847-3686
Mfr. Part No.102037 FAZ-XAA-NA12-110VAC
BrandEaton
kr 568,47
Each
Units
Surge Protector - 110 → 230 V dc, 12 → 110V ac - DIN Rail FAZ-XAA 1 17.5mm - 105mm 45mm - - 17.5 x 105 x 45mm
RS Stock No. 890-3809
Mfr. Part No.2905238
kr 3 329,15
Each
Units
Surge Protector - - - DIN Rail CBB 04 2X2RC-PT - 127.8mm - 108.5mm 70.8mm -30°C +60°C 127.8 x 108.5 x 70.8mm
RS Stock No. 210-9824
Mfr. Part No.LA4FVF
kr 751,22
Each
Units
- - 50 → 110 V ac, V dc TeSys - LA4F - - - - - - - -
New
RS Stock No. 249-3337
Mfr. Part No.1352620000
BrandWeidmuller
kr 2 241,51
Each
Units
Surge Protector 40kA - - DIN Rail 1352 1+N - - - - - - -
RS Stock No. 211-0180
Mfr. Part No.5SD7413-1
BrandSiemens
kr 11 490,09
Each
Units
Surge Arrestor 75kA - - DIN Rail 5SD 3 94.8mm 50kA 106.8mm 71.1mm -40°C +80°C 94.8 x 106.8 x 71.1mm
RS Stock No. 207-2702
Mfr. Part No.2905342
kr 2 145,80
Each
Units
Surge Arrestor 50kA - Type 2 Surge Arrester DIN Rail VAL-SEC 2 89.9mm 25kA 25.4mm 74.5mm -40°C +80°C 89.9 x 25.4 x 74.5mm
RS Stock No. 207-2766
Mfr. Part No.2907832
kr 1 729,64
Each
Units
Surge Protector - - Surge Protection Plug DIN Rail TTC - - - - - -40°C +80°C -
RS Stock No. 211-0181
Mfr. Part No.5SD7414-1
BrandSiemens
kr 14 663,02
Each
Units
Surge Arrestor 100kA - - DIN Rail 5SD 3 95mm 100kA 142.4mm 71.5mm -40°C +80°C 95 x 142.4 x 71.5mm
RS Stock No. 219-8276
Mfr. Part No.A9L40281
kr 1 771,05
Each
Units
Surge Arrestor 200A - Acti 9 DIN Rail A9L4 - - 15kA - - - - -
RS Stock No. 223-7773
Mfr. Part No.7P.25.8.275.1020
BrandFinder
kr 2 207,55
Each
Units
- 40kA - 7P SERIES - 7P 3 - 20kA - - - - -
RS Stock No. 207-2721
Mfr. Part No.2906716
kr 1 144,43
Each
Units
Surge Protector 20kA - Surge Protection Device DIN Rail TTC - - 0.5kA - - -40°C +80°C -
RS Stock No. 207-2767
Mfr. Part No.2907833
kr 1 750,95
Each
Units
Surge Protector - - Surge Protection Plug DIN Rail TTC - - - - - -40°C +80°C -
RS Stock No. 207-2703
Mfr. Part No.2905343
kr 3 306,43
Each
Units
Surge Arrestor 40kA - Type 2 Surge Arrester DIN Rail VAL-SEC 2 89.9mm 20kA 37.3mm 74.5mm -40°C +80°C 89.9 x 37.3 x 74.5mm
RS Stock No. 207-2729
Mfr. Part No.2906781
kr 1 810,31
Each
Units
Surge Protector 20kA - Surge Protection Device DIN Rail TTC - - 0.5kA - - -40°C +80°C -
RS Stock No. 801-6270
Mfr. Part No.2950077
kr 786,87
Each
Units
Surge Protector - 250V ac - DIN Rail EMG 22-DIO 7M - 75mm - 22.5mm 55mm -20°C +50°C 75 x 22.5 x 55mm
RS Stock No. 223-7768
Mfr. Part No.7P.23.9.750.1020
BrandFinder
kr 1 305,33
Each
Units
- 40kA - 7P SERIES - 7P 3 - 20kA - - - - -
RS Stock No. 190-2024
Mfr. Part No.SV480DA-U4
kr 771,65
Each
Units
Surge Protector 5kA - - Surface Mount SV 3 44mm 500A 42mm 37.5mm - - 44 x 42 x 37.5mm
RS Stock No. 190-2019
Mfr. Part No.LV550DI-U4
kr 508,24
Each
Units
Surge Protector 5kA - - Surface Mount LV 3 43mm 500A 36.5mm 24.5mm - - 43 x 36.5 x 24.5mm
RS Stock No. 211-0182
Mfr. Part No.5SD7414-2
BrandSiemens
kr 7 029,12
Each
Units
Surge Arrestor 50kA - - DIN Rail 5SD 3 89.9mm 50kA 71.2mm 77.5mm -40°C +80°C 89.9 x 71.2 x 77.5mm