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

4469 Products showing for Surge Protection Components

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Unavailable
RS PRO Metal Oxide Varistor 2.57nF, Clamping 395V, Varistor 240V
  • RS stock no. 901-2718
Subtotal (1 unit)
R 83,09(exc. VAT)
R 83,09/unit
Temporarily out of stock
Bourns, 2046 90 V dc 20 kA, Through Hole 3 Electrode Gas Discharge Tube Gas Discharge Tube
  • RS stock no. 172-8605
  • Mfr. Part No. 2046-09-C2LF
Subtotal (1 bag of 1000 units)
R 12 916,00(exc. VAT)
R 12,916/unit
In Stock
TDK, Standard Metal Oxide Varistor 65 pF 5 A, Clamping 650 V, Varistor 390 V
  • RS stock no. 289-6948
  • Mfr. Part No. B72205S0251K101
Subtotal (1 pack of 5 units)
R 21,22(exc. VAT)
R 4,244/unit
In Stock
Panasonic, V Surge Absorber 580 pF 50 A, Clamping 545 V, Varistor 330 V
  • RS stock no. 720-9960P
  • Mfr. Part No. ERZV14D331
Subtotal 5 units (supplied in a bag)
R 45,85(exc. VAT)
R 9,17/unit
In Stock
Bourns, GMOV Varistor 4 pF 6000 A, Varistor 275 V ac, 350 V dc, Disc
  • RS stock no. 186-2134
  • Mfr. Part No. GMOV-14D271K
Subtotal (1 pack of 5 units)
R 139,62(exc. VAT)
R 27,924/unit
Last RS stock
TDK NTC Thermistor, NTC Type 10 kΩ 4.5 mm 36 mm 4.5 mm
  • RS stock no. 146-0336
  • Mfr. Part No. B57891S0103J008
Subtotal (1 pack of 10 units)
R 150,38(exc. VAT)
R 15,038/unit
In Stock
TDK Thermistor, NTC Type 100 kΩ 2 mm 3 mm 5 mm
  • RS stock no. 191-2314
  • Mfr. Part No. B57164K0104J000
Subtotal (1 pack of 5 units)
R 53,38(exc. VAT)
R 10,676/unit
In Stock
TDK, Standard Metal Oxide Varistor 950 pF 25 A, Clamping 135 V, Varistor 82 V
  • RS stock no. 289-6998P
  • Mfr. Part No. B72210S0500K101
Subtotal 5 units (supplied in a bag)
R 31,53(exc. VAT)
R 6,306/unit
In Stock
TDK, Automative E Metal Oxide Varistor 2000 pF 45 A, Clamping 77 V, Varistor 47 V, 1812
  • RS stock no. 246-9793
  • Mfr. Part No. B72580T0300K062
Subtotal (1 tape of 10 units)
R 78,98(exc. VAT)
R 7,898/unit
Currently unavailable
TDK, Standard Metal Oxide Varistor 4500 A, Clamping 775 V
  • RS stock no. 769-1515
  • Mfr. Part No. B72214S0301K101
Subtotal (1 pack of 10 units)
R 46,93(exc. VAT)
R 4,693/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 139,03(exc. VAT)
R 27,806/unit
In Stock
Bourns, IsoMOV Disc Varistor 50 pF 50 A, Clamping 730 V, Varistor 350 V dc, 275 V ac, Disc (13.2 mm)
  • RS stock no. 219-0547
  • Mfr. Part No. IsoM3-275-B-L2
Subtotal (1 pack of 5 units)
R 114,90(exc. VAT)
R 22,98/unit
Last RS stock
TDK Thermistor, NTC Type 2.5 Ω 7 mm 21 mm 7 mm
  • RS stock no. 211-8024
  • Mfr. Part No. B57364S0259M000
Subtotal (1 unit)
R 50,64(exc. VAT)
R 50,64/unit
In Stock
TE Connectivity NTC Thermistor, NTC Type 10000 Ω, Closed End SST Tube
  • RS stock no. 235-5206
  • Mfr. Part No. GA10K3D732
Subtotal (1 unit)
R 639,72(exc. VAT)
R 639,72/unit
In Stock
TDK NTC Thermistor, NTC Type 10 kΩ 6.5 mm 2.41 mm
  • RS stock no. 146-0339
  • Mfr. Part No. B57867S0103F140
Subtotal (1 pack of 5 units)
R 183,76(exc. VAT)
R 36,752/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
In Stock
Vishay NTC Thermistor, NTC Type 10 kΩ, 0805 0.8 mm 2 mm 1.25 mm
  • RS stock no. 179-3950
  • Mfr. Part No. NTCS0805E3103JMT
Subtotal (1 reel of 250 units)
R 1 096,50(exc. VAT)
R 4,386/unit
Currently unavailable
TDK, AdvancedD Metal Oxide Varistor 780 pF 100 A, Clamping 775 V, Varistor 470 V
  • RS stock no. 138-9301
  • Mfr. Part No. B72220S2301K101
Subtotal (1 bag of 5 units)
R 66,94(exc. VAT)
R 13,388/unit
Temporarily out of stock
Telegartner, J01028A Surge Suppressor Unit 90V Maximum Voltage Rating Type N Arrester
  • RS stock no. 712-3153
  • Mfr. Part No. J01028A0044
Subtotal (1 unit)
R 2 539,54(exc. VAT)
R 2 539,54/unit
In Stock
Weidmüller, VARITECTOR Surge Protection Device 42V Maximum Voltage Rating 10 kA Maximum Surge Current
  • RS stock no. 902-8063
  • Mfr. Part No. 1063930000
Subtotal (1 unit)
R 1 400,86(exc. VAT)
R 1 400,86/unit
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