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

4485 Products showing for Surge Protection Components

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1 of 225
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
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 22,68(exc. VAT)
R 22,68/unit
In Stock
TDK Thermistor, NTC Type 16 Ω 16 mm 11.5 mm 6 mm
  • RS stock no. 211-7964
  • Mfr. Part No. B57236S0160M000
Subtotal (1 unit)
R 17,85(exc. VAT)
R 17,85/unit
Temporarily out of stock
ABB, OVR Surge Protection Device 400V ac Maximum Voltage Rating 20 kA Maximum Surge Current T2-T3 Surge Protective
  • RS stock no. 231-9981
  • Mfr. Part No. 2CTB803973R1200 OVR T2-T3 3N 20-275 P Q
Subtotal (1 unit)
R 5 791,78(exc. VAT)
R 5 791,78/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 95,59(exc. VAT)
R 95,59/unit
In Stock
Vishay NTC Thermistor, Negative Temperature Coefficient Type 10000 Ω 40 mm
  • RS stock no. 782-873
  • Mfr. Part No. NTCLE350E4103FHB0
Subtotal (1 unit)
R 18,33(exc. VAT)
R 18,33/unit
In Stock
TDK, AdvancedD Metal Oxide Varistor 850 pF 100 A, Clamping 510 V, Varistor 430 V
  • RS stock no. 241-6783
  • Mfr. Part No. B72220S2271K101
Subtotal (1 unit)
R 16,60(exc. VAT)
R 16,60/unit
In Stock
TDK Thermistor, NTC Type 15 Ω 7 mm 15 mm 7 mm
  • RS stock no. 216-1393
  • Mfr. Part No. B57237S0150M000
Subtotal (1 unit)
R 21,09(exc. VAT)
R 21,09/unit
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
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
Dehn, BVT Surge Protector 35V dc Maximum Voltage Rating 2 kA Maximum Surge Current Lightning Arrester
  • RS stock no. 768-1851
  • Mfr. Part No. BVT AD 24
Subtotal (1 unit)
R 11 137,52(exc. VAT)
R 11 137,52/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 39,54(exc. VAT)
R 39,54/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
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
Last RS stock
TDK, EHV 350 V dc 10 kA, Through Hole Surge Arrester Gas Discharge Tube
  • RS stock no. 703-1064
  • Mfr. Part No. B88069X4640C102
Subtotal (1 unit)
R 38,72(exc. VAT)
R 38,72/unit
Temporarily out of stock
TDK NTC Thermistor, NTC Type 10 kΩ, 0805 0.7 mm 2 mm 1.25 mm
  • RS stock no. 202-5364
  • Mfr. Part No. NTCG203EH471JT1
Subtotal (1 pack of 20 units)
R 75,30(exc. VAT)
R 3,765/unit
Temporarily out of 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
Last RS stock
Panasonic, V Surge Absorber 400 pF 50 A, Clamping 1355 V, Varistor 470 V
  • RS stock no. 720-9970
  • Mfr. Part No. ERZV14D471
Subtotal (1 pack of 5 units)
R 44,80(exc. VAT)
R 8,96/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
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
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