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

4393 Products showing for Surge Protection Components

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1 of 220
In Stock
Panasonic, V Surge Absorber 230 pF 25 A, Varistor 470 V
  • RS Stock No. 720-9908
  • Mfr. Part No. ERZV10D471
Subtotal (1 pack of 10 units)
TWD67.00(exc. GST)
TWD6.70/unit
In Stock
TDK Varistor
  • RS Stock No. 246-9800
  • Mfr. Part No. B72590D0050H160
Subtotal (1 tape of 10 units)
TWD50.00(exc. GST)
TWD5.00/unit
In Stock
TDK Thermistor, NTC Type 10 kΩ 45 mm 73.3 mm 1.8 mm
  • RS Stock No. 769-1940
  • Mfr. Part No. B57551G1103F000
Subtotal (1 pack of 5 units)
TWD514.00(exc. GST)
TWD102.80/unit
In Stock
TDK Thermistor, NTC Type 3 kΩ 6.5 mm 2.41 mm
  • RS Stock No. 528-8508
  • Mfr. Part No. B57861S0302J040
Subtotal (1 unit)
TWD42.00(exc. GST)
TWD42.00/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)
TWD117.00(exc. GST)
TWD117.00/unit
In Stock
Dehn, DG Modular Surge Protector 440V Maximum Voltage Rating 40 kA Maximum Surge Current Type 2 Arrester
  • RS Stock No. 847-0961
  • Mfr. Part No. DG M TNC 440 FM
Subtotal (1 unit)
TWD5,355,813.00(exc. GST)
TWD5,355,813.00/unit
In Stock
Eaton, SD Surge Suppressor Unit 32 V dc, 22V ac Maximum Voltage Rating 20 kA Maximum Surge Current Surge Protection
  • RS Stock No. 251-3823
Subtotal (1 unit)
TWD8,722.00(exc. GST)
TWD8,722.00/unit
In Stock
TDK, EHV 230 V dc 10 kA, Through Hole 2 Electrode Arrester Gas Discharge Tube
  • RS Stock No. 191-1513
  • Mfr. Part No. B88069X2930C102
Subtotal (1 unit)
TWD79.00(exc. GST)
TWD79.00/unit
In Stock
Littelfuse, LA Varistor Metal Oxide Varistor 1.9 nF 100 A, Clamping 2700 V, Varistor 228 V, Radial
  • RS Stock No. 543-4880
  • Mfr. Part No. V130LA20AP
Subtotal (1 pack of 5 units)
TWD126.00(exc. GST)
TWD25.20/unit
In Stock
TDK Thermistor, NTC Type 25 Ω 16 mm 11 mm 6 mm
  • RS Stock No. 467-624
  • Mfr. Part No. B57236S0250M000
Subtotal (1 unit)
TWD32.00(exc. GST)
TWD32.00/unit
In Stock
Vishay, VDRS - E Metal Oxide Varistor 140 pF 10 A, Clamping 376 V, Varistor 430 V, Disc
  • RS Stock No. 178-071
  • Mfr. Part No. VDRS07H275BSE
Subtotal (1 pack of 5 units)
TWD36.00(exc. GST)
TWD7.20/unit
In Stock
TDK Thermistor, NTC Type 30 kΩ 6.5 mm 50 mm 2.41 mm
  • RS Stock No. 629-8736
  • Mfr. Part No. B57863S0303F040
Subtotal (1 unit)
TWD95.00(exc. GST)
TWD95.00/unit
Temporarily out of stock
Molex NTC Thermistor, NTC Type 30 kΩ 40 mm
  • RS Stock No. 230-2135
  • Mfr. Part No. 215272-3805
Subtotal (1 pack of 5 units)
TWD305.00(exc. GST)
TWD61.00/unit
Temporarily out of stock
TDK Thermistor, NTC Type 10 Ω, Leaded and Coated Disks 13 mm 8.5 mm 6 mm
  • RS Stock No. 185-7867
  • Mfr. Part No. B57153S0100M000
Subtotal (1 pack of 5 units)
TWD98.00(exc. GST)
TWD19.60/unit
In Stock
Vishay Thermistor, PTC Type 1 kΩ, L10 5 mm 3.6 mm 2.2 mm
  • RS Stock No. 179-3920
  • Mfr. Part No. TFPTL10L1001FL2B
Subtotal (1 tape of 20 units)
TWD580.00(exc. GST)
TWD29.00/unit
In Stock
Panasonic Thermistor, NTC Type 4.7 kΩ, 0603 0.3 mm 0.6 mm 0.3 mm
  • RS Stock No. 764-0756
  • Mfr. Part No. ERTJZET472H
Subtotal (1 pack of 25 units)
TWD40.00(exc. GST)
TWD1.60/unit
In Stock
Amphenol Advanced Sensors NTC Thermistor, NTC Type 0.5 Ω
  • RS Stock No. 257-9500
  • Mfr. Part No. CL-101
Subtotal (1 pack of 2 units)
TWD202.00(exc. GST)
TWD101.00/unit
In Stock
TDK, Standard Metal Oxide Varistor 260 pF 50 A, Clamping 2970 V, Varistor 750 V
  • RS Stock No. 289-7216P
  • Mfr. Part No. B72214S0461K101
Subtotal 5 units (supplied in a bag)
TWD95.00(exc. GST)
TWD19.00/unit
In Stock
WJ Furse, ESP M1 Surge Suppressor Unit 280V Maximum Voltage Rating 40 kA Maximum Surge Current Mains Surge Protector
  • RS Stock No. 788-6750
  • Mfr. Part No. 7TCA085460R0112 ESP 415M1
Subtotal (1 unit)
TWD44,276.00(exc. GST)
TWD44,276.00/unit
In Stock
TDK Thermistor, PTC Type 4.6 Ω 10 mm 6.5 mm 3.5 mm
  • RS Stock No. 212-0500
  • Mfr. Part No. B59985C0120A070
Subtotal (1 unit)
TWD40.00(exc. GST)
TWD40.00/unit
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