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

4453 Products showing for Surge Protection Components

1 of 223
In Stock
TDK Thermistor, NTC Type 5 Ω 6 mm 9.5 mm 6 mm
  • RS stock no. 467-614
  • Mfr. Part No. B57235S0509M000
Subtotal (1 unit)
R 13,49(exc. VAT)
R 13,49/unit
In Stock
TDK, Standard Metal Oxide Varistor 430 pF 25 A, Clamping 395 V, Varistor 240 V
  • RS stock no. 289-7036
  • Mfr. Part No. B72210S0151K101
Subtotal (1 pack of 5 units)
R 33,55(exc. VAT)
R 6,71/unit
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 1 946,92(exc. VAT)
R 1 946,92/unit
In Stock
Amphenol Advanced Sensors NTC Thermistor, NTC Type 5 Ω
  • RS stock no. 257-9502
  • Mfr. Part No. CL-160
Subtotal (1 pack of 5 units)
R 81,76(exc. VAT)
R 16,352/unit
Last RS stock
TDK, AdvancedD Metal Oxide Varistor 410 pF 100 A, Clamping 1500 V, Varistor 910 V
  • RS stock no. 241-6790
  • Mfr. Part No. B72220S2551K101
Subtotal (1 unit)
R 31,30(exc. VAT)
R 31,30/unit
Temporarily out of stock
Panasonic, V Surge Absorber 190 pF 10 A, Clamping 360 V, Varistor 220 V
  • RS stock no. 785-8708
  • Mfr. Part No. ERZE05A221
Subtotal (1 pack of 25 units)
R 56,00(exc. VAT)
R 2,24/unit
Temporarily out of stock
Vishay NTC Thermistor, NTC Type 10 kΩ, Ring lug 165.7 mm
  • RS stock no. 782-891
  • Mfr. Part No. NTCALUG01T103G
Subtotal (1 unit)
R 55,75(exc. VAT)
R 55,75/unit
In Stock
Vishay NTC Thermistor, NTC Type 10 kΩ 15.7 mm 7.2 mm
  • RS stock no. 179-3945
  • Mfr. Part No. NTCALUG01T103G501
Subtotal (1 bag of 10 units)
R 675,82(exc. VAT)
R 67,582/unit
In Stock
TDK Thermistor, NTC Type 10 kΩ 17.5 mm 8.5 mm 6.5 mm
  • RS stock no. 706-2743
  • Mfr. Part No. B57703M0103G040
Subtotal (1 unit)
R 61,95(exc. VAT)
R 61,95/unit
Temporarily out of stock
Bourns, CVQ Disc Varistor 280 pF 3500 A, Clamping 775 V, Varistor 470 V
  • RS stock no. 245-9118
  • Mfr. Part No. CVQ300K10BL1
Subtotal (1 pack of 10 units)
R 66,83(exc. VAT)
R 6,683/unit
In Stock
TDK Thermistor, NTC Type 5 Ω 6 mm 9.5 mm 6 mm
  • RS stock no. 467-614P
  • Mfr. Part No. B57235S0509M000
Subtotal 1 unit (supplied in a bag)
R 13,49(exc. VAT)
R 13,49/unit
In Stock
TDK, Standard Metal Oxide Varistor 210 pF 10 A, Clamping 395 V, Varistor 240 V
  • RS stock no. 204-2040
  • Mfr. Part No. B72207S0151K101
Subtotal (1 pack of 5 units)
R 23,33(exc. VAT)
R 4,666/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 17,66(exc. VAT)
R 17,66/unit
In Stock
Vishay Thermistor, NTC Type 10 kΩ 41.9 mm
  • RS stock no. 126-299
  • Mfr. Part No. NTCALUG01A103FA
Subtotal (1 pack of 5 units)
R 226,90(exc. VAT)
R 45,38/unit
In Stock
TDK, Standard Metal Oxide Varistor 13 nF 20 A, Clamping 65 V, Varistor 33 V
  • RS stock no. 204-1974
  • Mfr. Part No. B72220S0200K101
Subtotal (1 pack of 5 units)
R 83,06(exc. VAT)
R 16,612/unit
In Stock
Panasonic, V Surge Absorber 290 pF 50 A, Clamping 1120 V, Varistor 680 V
  • RS stock no. 785-8922
  • Mfr. Part No. ERZE11A681
Subtotal (1 pack of 25 units)
R 102,90(exc. VAT)
R 4,116/unit
In Stock
TDK, Standard Metal Oxide Varistor 260 pF 50 A, Clamping 2970 V, Varistor 750 V
  • RS stock no. 289-7216
  • Mfr. Part No. B72214S0461K101
Subtotal (1 pack of 5 units)
R 57,20(exc. VAT)
R 11,44/unit
In Stock
Vishay Thermistor, NTC Type 5 kΩ 9 mm 3.3 mm 3 mm
  • RS stock no. 754-6641
  • Mfr. Part No. NTCLE100E3502GB0
Subtotal (1 pack of 5 units)
R 73,69(exc. VAT)
R 14,738/unit
Temporarily out of stock
TDK, HighE Metal Oxide Varistor 2 nF 25000 A, Clamping 710 V, Varistor 430 V
  • RS stock no. 246-9773
  • Mfr. Part No. B72232B0271K001
Subtotal (1 unit)
R 355,92(exc. VAT)
R 355,92/unit
In Stock
TDK, Standard Metal Oxide Varistor 120 pF 10 A, Clamping 2970 V, Varistor 390 V
  • RS stock no. 204-2056
  • Mfr. Part No. B72207S0251K101
Subtotal (1 pack of 5 units)
R 20,31(exc. VAT)
R 4,062/unit
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