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

4207 Products showing for Surge Protection Components

1 of 211
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)
SGD8.14(exc. GST)
SGD1.628/unit
In Stock
TDK, AdvancedD Metal Oxide Varistor 490 pF 50 A, Clamping 650 V, Varistor 390 V
  • RS Stock No. 241-6769
  • Mfr. Part No. B72214S2251K101
Subtotal (1 pack of 5 units)
SGD3.41(exc. GST)
SGD0.682/unit
In Stock
Littelfuse, VA Varistor 14.73 nF 10 A, Clamping 43 V, Varistor 22 V, Disc
  • RS Stock No. 252-703
  • Mfr. Part No. V22ZA3P
Subtotal (1 pack of 5 units)
SGD3.89(exc. GST)
SGD0.778/unit
In Stock
Wurth Elektronik, WE-VS Varistor 200 pF 1 A, Clamping 30 V, Varistor 8 V, 0603
  • RS Stock No. 669-4399
  • Mfr. Part No. 82536040
Subtotal (1 pack of 5 units)
SGD4.93(exc. GST)
SGD0.986/unit
In Stock
Littelfuse, LA Varistor Metal Oxide Varistor 200 pF 25 A, Clamping 2700 V, Varistor 430 V, Disc
  • RS Stock No. 800-7065
  • Mfr. Part No. V275LA10P
Subtotal (1 pack of 10 units)
SGD6.27(exc. GST)
SGD0.627/unit
Temporarily out of stock
TDK Thermistor, PTC Type 450 mΩ 21 mm 17.5 mm 3.5 mm
  • RS Stock No. 212-0421
  • Mfr. Part No. B59945C0120A070
Subtotal (1 unit)
SGD3.00(exc. GST)
SGD3.00/unit
In Stock
TDK, EHV 600 V dc 25 kA, Through Hole 2 Electrode Arrester Gas Discharge Tube
  • RS Stock No. 703-1048
  • Mfr. Part No. B88069X2880S102
Subtotal (1 pack of 5 units)
SGD15.16(exc. GST)
SGD3.032/unit
Temporarily out of stock
Vishay NTC Thermistor, NTC Type 10 kΩ, Lug Sensor 15.7 mm 7.2 mm
  • RS Stock No. 179-3901
  • Mfr. Part No. NTCALUG01A103F
Subtotal (1 bag of 10 units)
SGD32.98(exc. GST)
SGD3.298/unit
In Stock
TDK Thermistor, NTC Type 10 kΩ, 0603 0.9 mm 1.6 mm 0.8 mm
  • RS Stock No. 706-2709
  • Mfr. Part No. B57321V2103J060
Subtotal (1 pack of 5 units)
SGD1.68(exc. GST)
SGD0.336/unit
In Stock
TDK, StandardD Metal Oxide Varistor 70 pF 10 A, Clamping 1240 V, Varistor 750 V
  • RS Stock No. 241-6735
  • Mfr. Part No. B72207S0461K101
Subtotal (1 pack of 5 units)
SGD2.02(exc. GST)
SGD0.404/unit
In Stock
Murata Thermistor, NTC Type 22 kΩ, 0603 0.8 mm 1.6 mm 0.8 mm
  • RS Stock No. 725-9054
  • Mfr. Part No. NCP18XW223J03RB
Subtotal (1 pack of 10 units)
SGD1.60(exc. GST)
SGD0.16/unit
In Stock
TDK, StandardD Metal Oxide Varistor 350 pF 50 A, Clamping 910 V, Varistor 560 V
  • RS Stock No. 241-6764
  • Mfr. Part No. B72214S0351K101
Subtotal (1 pack of 5 units)
SGD2.42(exc. GST)
SGD0.484/unit
In Stock
Bourns, DV Varistor 85 pF 5 A, Clamping 775 V, Varistor 470 V, 3225
  • RS Stock No. 204-8694
  • Mfr. Part No. DV300K3225R2
Subtotal (1 pack of 10 units)
SGD10.40(exc. GST)
SGD1.04/unit
In Stock
WJ Furse, ESP E Surge Suppressor Unit 36.7V Maximum Voltage Rating 20 kA Maximum Surge Current Twisted Pair Surge
  • RS Stock No. 456-8178
  • Mfr. Part No. 7TCA085400R0104 ESP 30E
Subtotal (1 unit)
SGD304.75(exc. GST)
SGD304.75/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)
SGD4.91(exc. GST)
SGD0.982/unit
Currently unavailable
Littelfuse, LA Metal Oxide Varistor 1.6 nF 100 A, Clamping 360 V, Varistor 212 to 243 V
  • RS Stock No. 760-6872
  • Mfr. Part No. V150LA20BP
Subtotal (1 pack of 5 units)
SGD6.84(exc. GST)
SGD1.368/unit
In Stock
TDK, Standard Metal Oxide Varistor 2.3 nF 2.5 A, Clamping 2970 V, Varistor 22 V
  • RS Stock No. 204-1801
  • Mfr. Part No. B72207S0140K101
Subtotal (1 pack of 5 units)
SGD1.74(exc. GST)
SGD0.348/unit
In Stock
TE Connectivity Thermistor, NTC Type 10 kΩ, Polyimide Tube 56 mm
  • RS Stock No. 893-7183P
  • Mfr. Part No. GA10K3MBD1
Subtotal 1 unit (supplied in a bag)
SGD22.40(exc. GST)
SGD22.40/unit
In Stock
TDK, StandardD Metal Oxide Varistor 440 pF 50 A, Clamping 710 V, Varistor 430 V
  • RS Stock No. 241-6762
  • Mfr. Part No. B72214S0271K151
Subtotal (1 pack of 5 units)
SGD3.47(exc. GST)
SGD0.694/unit
In Stock
TE Connectivity Thermistor, NTC Type 10 kΩ, Polyimide Tube 155 mm
  • RS Stock No. 893-7180
  • Mfr. Part No. GA10K3MCD1
Subtotal (1 unit)
SGD27.79(exc. GST)
SGD27.79/unit
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