Industrial Surge Protection

Industrial surge protection components 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 is industrial surge protection used for?

Industrial surge protection involves the use of surge suppressors 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 industrial surge protection

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 Maximum Surge Current Range Voltage Protection Rating Electrical Phase Series Mounting Style Impulse Discharge Current Length Width Depth Minimum Operating Temperature Maximum Operating Temperature Dimensions Operating Temperature Range
RS Stock No. 768-1192
Mfr. Part No.2762265
£218.32
Each
Units
10kA - - - MT-RS485 DIN Rail 500A 77.5mm 47.6mm 54.9mm -40°C +60°C 77.5 x 47.6 x 54.9mm -40 → +60 °C
RS Stock No. 652-8403
Mfr. Part No.2882682
£380.96
Each
Units
- - 250V ac - FLT-CP-PLUS-1S-350 DIN Rail 25kA 95.8mm 71.6mm 70mm -40°C +80°C 95.8 x 71.6 x 70mm -40 → +80 °C
RS Stock No. 735-2799
Mfr. Part No.3TX4490-3G
BrandSiemens
£7.94
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 776-3890
Mfr. Part No.A9L16294
£690.00
Each
Units
20kA Acti 9 - - iPRD DIN Rail - 94mm 131.5mm 75.9mm -25°C +60°C 94 x 131.5 x 75.9mm -25 → +60 °C
RS Stock No. 124-3019
Mfr. Part No.EM3SSK3T12
BrandEaton
£1,181.62
Each
Units
- - 1.5kV - - - 3 x 50/100kA 254mm 140mm 238mm - - 254 x 140 x 238mm -
RS Stock No. 818-5746
Mfr. Part No.LA4FVP
£39.00
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 801-6211
Mfr. Part No.2950048
£42.81
Each
Units
- - 250V ac - EMG 22-DIO 4E DIN Rail - 75mm 22.5mm 55mm -20°C +50°C 75 x 22.5 x 55mm -20 → +50 °C
RS Stock No. 847-3673
Mfr. Part No.278519 & FAZ-XAA-C-110-415VAC
BrandEaton
£36.38
Each
Units
- - 110 → 230 V dc, 110 → 415V ac - - DIN Rail - 26.2mm 80mm 69.6mm - - 26.2 x 80 x 69.6mm -
RS Stock No. 890-3749
Mfr. Part No.2905339
£263.87
Each
Units
- - 2kV 3 VAL-SEC-T2-3C-350-FM DIN Rail 40kA 97.9mm 37.3mm 74.5mm -40°C +80°C 97.9 x 37.3 x 74.5mm -40 → +80 °C
RS Stock No. 801-6343
Mfr. Part No.2952790
£48.57
Each
Units
- - 250V ac - EMG 22-DIO 4E-1N5408 DIN Rail - 75mm 22.5mm 55mm -20°C +50°C 75 x 22.5 x 55mm -20 → +50 °C
RS Stock No. 398-6648
Mfr. Part No.1SNA031809R2600
BrandABB
£21.33
Each
Units
- - - - 7200 - - - 5.08mm - -20°C +60°C - -20 → +60 °C
RS Stock No. 776-3896
Mfr. Part No.A9L16297
£538.20
Each
Units
5kA Acti 9 - - iPRD DIN Rail - 94mm 131.5mm 75.9mm -25°C +60°C 94 x 131.5 x 75.9mm -25 → +60 °C
RS Stock No. 817-5323
Mfr. Part No.LAD4DDL
£13.51
Each
Units
- - 24 → 250V dc - - - - - - - -25°C +55°C - -25 → +55 °C
RS Stock No. 735-2793
Mfr. Part No.3TX4490-3J
BrandSiemens
£9.67
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 815-3278
Mfr. Part No.SDSA3650
£258.00
Each
Units
40kA - - 3 - - 10kA 92mm 76mm 67mm -40°C +65°C 92 x 76 x 67mm -40 → +65 °C
RS Stock No. 890-3705
Mfr. Part No.2905871
£1,066.27
Each
Units
- - ≤1.5kV 3 FLT-SEC-H-T1-3C-264/25-FM DIN Rail 25kA 167mm 106.8mm 74.5mm -40°C +80°C 167 x 106.8 x 74.5mm -40 → +80 °C
RS Stock No. 776-3834
Mfr. Part No.A9L16618
£373.69
Each
Units
20kA Acti 9 - - iPRD DIN Rail - 106.8mm 74.1mm 74.1mm -5°C +60°C 106.8 x 88.4 x 74.1mm -5 → +60 °C
RS Stock No. 890-3742
Mfr. Part No.2905340
£297.65
Each
Units
- - 2kV 3 VAL-SEC-T2-3S-350-FM DIN Rail 40kA 97.9mm 49.2mm 74.5mm -40°C +80°C 97.9 x 49.2 x 74.5mm -40 → +80 °C
RS Stock No. 890-3764
Mfr. Part No.2905230
£264.18
Each
Units
- - ≤1.5kV 3 PLT-SEC-T3-3S-230-FM DIN Rail 3kA 90mm 35.4mm 74.5mm -40°C +70°C 90 x 35.4 x 74.5mm -40 → +70 °C
RS Stock No. 890-3727
Mfr. Part No.2905466
£536.35
Each
Units
- - 1.8kV 1 FLT-SEC-T1+T2-1S-350/25-FM DIN Rail 100kA 95.2mm 71.2mm 74.5mm -40°C +80°C 95.2 x 71.2 x 74.5mm -40 → +80 °C