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

4404 Products showing for Surge Protection Components

1 of 221
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)
$1,000.26(exc. GST)
$1,000.26/unit
In Stock
Mersen, STPT23 Surge Protector 275V ac Maximum Voltage Rating 20 kA Maximum Surge Current Type 3 Arrester, Type 2
  • RS Stock No. 179-3066
  • Mfr. Part No. 83230111 / STPT23-20K275V-2PG-LFM
Subtotal (1 unit)
$201.62(exc. GST)
$201.62/unit
In Stock
RS PRO Thermistor, NTC Type 10 kΩ 63.5 mm 63.5 mm 2.4 mm
  • RS Stock No. 151-237
Subtotal (1 unit)
$11.42(exc. GST)
$11.42/unit
In Stock
Roxburgh EMC, DVS Varistor, Varistor 24 V
  • RS Stock No. 240-040
  • Mfr. Part No. DVS24
Subtotal (1 unit)
$53.60(exc. GST)
$53.60/unit
Last RS stock
TDK Thermistor, NTC Type 5 Ω 22 mm 14.5 mm 7 mm
  • RS Stock No. 769-1886
  • Mfr. Part No. B57213P0509M301
Subtotal (1 pack of 5 units)
$8.06(exc. GST)
$1.612/unit
In Stock
Dehn, DG Modular Surge Protector 350 V dc, 275V ac Maximum Voltage Rating 40 kA Maximum Surge Current Type 2 Arrester
  • RS Stock No. 768-1779
  • Mfr. Part No. DG S 275
Subtotal (1 unit)
$158.46(exc. GST)
$158.46/unit
In Stock
Vishay NTC Thermistor, NTC Type 10 kΩ 10 mm 1 m 3 mm
  • RS Stock No. 179-3784
  • Mfr. Part No. NTCLE413E2103F102L
Subtotal (1 box of 100 units)
$178.20(exc. GST)
$1.782/unit
In Stock
TDK, EHV 230 V 20 kA, Through Hole 2 Electrode Arrester Gas Discharge Tube
  • RS Stock No. 191-1541
  • Mfr. Part No. B88069X1630T602
Subtotal (1 unit)
$2.99(exc. GST)
$2.99/unit
In Stock
Weidmüller, 1348 Surge Suppressor Unit 48V Maximum Voltage Rating 10 kA Maximum Surge Current Cat-6 Surge Protector
  • RS Stock No. 249-3332
  • Mfr. Part No. 1348590000
Subtotal (1 unit)
$265.16(exc. GST)
$265.16/unit
In Stock
Red Lion, R-C Surge Suppressor Unit 250V dc Maximum Voltage Rating Inductive Load Suppressor
  • RS Stock No. 905-5771
  • Mfr. Part No. SNUB0000
Subtotal (1 unit)
$40.37(exc. GST)
$40.37/unit
In Stock
TDK, Standard Metal Oxide Varistor 9.35 nF 20 A, Clamping 93 V, Varistor 47 V
  • RS Stock No. 289-7597
  • Mfr. Part No. B72220S0300K101
Subtotal (1 pack of 5 units)
$6.51(exc. GST)
$1.302/unit
In Stock
TDK, Standard Metal Oxide Varistor 870 pF 25 A, Clamping 165 V, Varistor 100 V
  • RS Stock No. 289-7008
  • Mfr. Part No. B72210S0600K101
Subtotal (1 pack of 5 units)
$2.43(exc. GST)
$0.486/unit
In Stock
Wurth Elektronik Metal Oxide Varistor
  • RS Stock No. 485-472
  • Mfr. Part No. 820445511E
Subtotal (1 pack of 10 units)
$19.13(exc. GST)
$1.913/unit
In Stock
TDK Thermistor, NTC Type 10 kΩ, DO-35 2.2 mm 71 mm 1.3 mm
  • RS Stock No. 769-1919
  • Mfr. Part No. B57550G1103F000
Subtotal (1 pack of 5 units)
$19.93(exc. GST)
$3.986/unit
In Stock
Panasonic, V Surge Absorber 500 pF 10 A, Clamping 250 V, Varistor 150 V
  • RS Stock No. 720-9813
  • Mfr. Part No. ERZV07D151
Subtotal (1 pack of 10 units)
$2.29(exc. GST)
$0.229/unit
In Stock
TDK Thermistor, NTC Type 10 Ω 31 mm 26 mm 7 mm
  • RS Stock No. 185-7767
  • Mfr. Part No. B57464S0100M000
Subtotal (1 unit)
$9.54(exc. GST)
$9.54/unit
In Stock
Murrelektronik Limited, Limited Surge Suppressor Surge Suppressor Unit 30V Maximum Voltage Rating
  • RS Stock No. 270-9492
  • Mfr. Part No. 3124033
Subtotal (1 unit)
$31.17(exc. GST)
$31.17/unit
Stocked by manufacturer
Phoenix Contact, MPB Surge Arrester
  • RS Stock No. 130-298
  • Mfr. Part No. 2809225
Subtotal (1 pack of 10 units)
$61.59(exc. GST)
$6.159/unit
In Stock
TDK Thermistor, Negative Temperature Coefficient Type 100 kΩ, DO-35 2.2 mm 71 mm 1.3 mm
  • RS Stock No. 769-1934
  • Mfr. Part No. B57550G1104F000
Subtotal (1 pack of 5 units)
$21.71(exc. GST)
$4.342/unit
In Stock
TDK Thermistor, NTC Type 10 Ω, Leaded and Coated Disks 18 mm 11 mm 6 mm
  • RS Stock No. 769-1861
  • Mfr. Part No. B57211P0100M301
Subtotal (1 pack of 5 units)
$7.35(exc. GST)
$1.47/unit
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