Surge Protection Components

It is important to protect any electrical equipment or circuitry you have from the harmful effects of power surges, so choose from our range of protective devices and components today. We’re able to offer you a wide variety of quality products from leading manufacturers including Bourns, Huber & Suhner, ON Semiconductor and Siemens.

How does surge protection work?

Power surges are a sudden increase in the electrical current being routed into power outlets. If a power surge happens, irreparable damage to equipment can be caused.

Surge protection is an essential and effective way of preventing this damage from occurring and can take many forms, from specialist plug sockets that absorb the additional voltage to components that can be used in the equipment itself.

What causes a power surge?

Power surges happen when the flow of electricity is briefly interrupted and started again. They can occur when equipment starts up or shut off. Classic examples of this would be air conditioning units, refrigeration equipment or motor-driven devices.

Power surges can also happen naturally, like a lightning strike or power lines coming down in a storm. They can also happen after mains power cuts when the power returns.

What is the difference between a surge and a spike?

  • If overvoltage increases for three nanoseconds or more this is called a surge.
  • If overvoltage increases for one or two nanoseconds this is called a spike.

What types of surge protection components are there?

Gas discharge tubes- a glass tube which is sealed at both ends, contains two electrodes and is filled with a gas that conducts electricity when a high voltage is applied. This type of component can be used to protect sensitive circuits.

Surge suppressor units - a common type of component, a surge suppressor unit can be built into a device, such as a power strip, or used as a standalone component.

Switching spark gap - these are used to switch between circuits quickly and are often used in the building and automotive industries.

Gas Discharge Tubes
Gas Discharge Tubes
Surge Suppressor Units
Surge Suppressor Units
Switching Spark Gaps
Switching Spark Gaps
Thermistor ICs
Thermistor ICs
Varistors
Varistors

4342 Products showing for Surge Protection Components

1 of 218
In Stock
Dehn, DG Modular Surge Protector 500V Maximum Voltage Rating 20 kA Maximum Surge Current Type 2 Arrester
  • RS stock no. 847-0968
  • Mfr. Part No. DG S 385
Subtotal (1 unit)
R 150,70(exc. VAT)
R 150,70/unit
In Stock
Dehn, DG Modular Surge Protector 275V ac Maximum Voltage Rating 40 kA Maximum Surge Current Type 2 Arrester
  • RS stock no. 768-1741
  • Mfr. Part No. DG M TNS 275 FM
Subtotal (1 unit)
R 9 241,10(exc. VAT)
R 9 241,10/unit
In Stock
TDK Thermistor, NTC Type 1 Ω 31 mm 26 mm 7 mm
  • RS stock no. 185-7763
  • Mfr. Part No. B57464S0109M000
Subtotal (1 unit)
R 92,05(exc. VAT)
R 92,05/unit
In Stock
ABB, OVR Surge Protection Device 275V Maximum Voltage Rating 40 kA Maximum Surge Current Surge Protection Device
  • RS stock no. 175-2595
  • Mfr. Part No. 2CTB815704R0200 OVR T2 1N 40-275s P TS QS
Subtotal (1 unit)
R 3 074,80(exc. VAT)
R 3 074,80/unit
In Stock
TDK Thermistor, NTC Type 10 Ω 16 mm 11.5 mm 6 mm
  • RS stock no. 211-7958
  • Mfr. Part No. B57236S0100M000
Subtotal (1 unit)
R 15,40(exc. VAT)
R 15,40/unit
In Stock
TDK Thermistor, NTC Type 10 kΩ 6.5 mm 2.41 mm
  • RS stock no. 528-8536
  • Mfr. Part No. B57861S0103J040
Subtotal (1 unit)
R 23,39(exc. VAT)
R 23,39/unit
In Stock
TDK, B722 Metal Oxide Varistor 215 pF 50 A, Clamping 2970 V, Varistor 910 V
  • RS stock no. 138-9257
  • Mfr. Part No. B72214S0551K101
Subtotal (1 bag of 5 units)
R 118,78(exc. VAT)
R 23,756/unit
In Stock
TDK Thermistor, NTC Type 60 Ω 22 mm 15 mm 7 mm
  • RS stock no. 185-7805
  • Mfr. Part No. B57237S0600M000
Subtotal (1 pack of 5 units)
R 91,81(exc. VAT)
R 18,362/unit
Temporarily out of stock
Bourns, MOV-20D Metal Oxide Varistor 930 pF 100 A, Clamping 710 V, Varistor 430 V
  • RS stock no. 851-8382
  • Mfr. Part No. MOV-20D431K
Subtotal (1 unit)
R 13,61(exc. VAT)
R 13,61/unit
In Stock
Panasonic, V Surge Absorber 20 A, Clamping 77 V
  • RS stock no. 720-9998P
  • Mfr. Part No. ERZV20D390
Subtotal 2 units (supplied in a bag)
R 45,49(exc. VAT)
R 22,745/unit
In Stock
Bourns, MOV-14DxxxK Metal Oxide Varistor 460 pF 50 A, Clamping 710 V, Varistor 430 V, Disc (14 mm)
  • RS stock no. 233-0780
  • Mfr. Part No. MOV-14D431KTR
Subtotal (1 tape of 10 units)
R 51,14(exc. VAT)
R 5,114/unit
Last RS stock
Phoenix Contact, VAL Surge Suppressor Unit 275V ac Maximum Voltage Rating 40 kA Maximum Surge Current Surge Arrester
  • RS stock no. 190-2098
  • Mfr. Part No. 2804429
Subtotal (1 unit)
R 3 462,66(exc. VAT)
R 3 462,66/unit
In Stock
Bourns, IsoMOV Disc Varistor 75 pF 100 A, Clamping 1300 V, Varistor 510 V ac, 670 V dc, Disc (13.2 mm)
  • RS stock no. 219-0557
  • Mfr. Part No. IsoM5-510-B-L2
Subtotal (1 pack of 5 units)
R 124,62(exc. VAT)
R 24,924/unit
Last RS stock
TDK, EHV 90 V dc 15 kA, Through Hole 3 Electrode Arrester Gas Discharge Tube
  • RS stock no. 308-8277
  • Mfr. Part No. B88069X8300B502
Subtotal (1 unit)
R 36,53(exc. VAT)
R 36,53/unit
In Stock
Bourns, AV Varistor 810 pF 1 A, Clamping 44 V, Varistor 27 V, 1206
  • RS stock no. 209-8084
  • Mfr. Part No. AV17K1206201NIR1
Subtotal (1 tape of 25 units)
R 70,225(exc. VAT)
R 2,809/unit
Currently unavailable
Bourns, MOV-14D Metal Oxide Varistor 50 A, Clamping 925 V
  • RS stock no. 851-8341
  • Mfr. Part No. MOV-14D561K
Subtotal (1 unit)
R 9,20(exc. VAT)
R 9,20/unit
In Stock
Allen Bradley, 100-FS Surge Suppressor Unit 280V ac Maximum Voltage Rating 97 A Maximum Surge Current Surge Suppressor
  • RS stock no. 261-2808
  • Mfr. Part No. 100-FSC280
Subtotal (1 unit)
R 398,96(exc. VAT)
R 398,96/unit
In Stock
ABB, OVR Surge Protection Device 275V Maximum Voltage Rating 40 kA Maximum Surge Current Surge Protection Device
  • RS stock no. 175-2600
  • Mfr. Part No. 2CTB815704R2600 OVR T2 40-275s C QS
Subtotal (1 unit)
R 1 529,10(exc. VAT)
R 1 529,10/unit
In Stock
Dehn, DG Modular Surge Protector 600V Maximum Voltage Rating 15 kA Maximum Surge Current Type 2 Arrester
  • RS stock no. 847-0980
  • Mfr. Part No. DG M WE 600 FM
Subtotal (1 unit)
R 16 194,63(exc. VAT)
R 16 194,63/unit
In Stock
Bourns, CV Disc Varistor 280 pF 2500 A, Clamping 775 V, Varistor 470 V, Disc (10 mm)
  • RS stock no. 245-9091
  • Mfr. Part No. CV300K10BL1
Subtotal (1 pack of 10 units)
R 69,12(exc. VAT)
R 6,912/unit
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