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

4135 Products showing for Surge Protection Components

1 of 207
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, Standard Metal Oxide Varistor 3.55 nF 10 A, Clamping 2970 V, Varistor 68 V
  • RS Stock No. 289-6831
  • Mfr. Part No. B72214S0400K101
Subtotal (1 pack of 5 units)
SGD3.20(exc. GST)
SGD0.64/unit
In Stock
Littelfuse, LA Metal Oxide Varistor 220 pF 25 A, Clamping 2700 V, Varistor 390 V, Disc
  • RS Stock No. 800-7040
  • Mfr. Part No. V250LA10P
Subtotal (1 pack of 10 units)
SGD2.38(exc. GST)
SGD0.238/unit
In Stock
TDK Thermistor, NTC Type 5 Ω 6 mm 9.5 mm 6 mm
  • RS Stock No. 467-614
  • Mfr. Part No. B57235S0509M000
Subtotal (1 unit)
SGD0.90(exc. GST)
SGD0.90/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
Temporarily out of stock
Panasonic, V Surge Absorber 810 pF 10 A, Varistor 82 V
  • RS Stock No. 720-9807
  • Mfr. Part No. ERZV07D820
Subtotal (1 pack of 10 units)
SGD3.30(exc. GST)
SGD0.33/unit
In Stock
Phoenix Contact Surge Protection Device, 6 A, DIN Rail
  • RS Stock No. 265-8963
  • Mfr. Part No. 1027586
Subtotal (1 unit)
SGD265.06(exc. GST)
SGD265.06/unit
Temporarily out of stock
Vishay NTC Thermistor, NTC Type 10 kΩ 8 mm 8 mm 8 mm
  • RS Stock No. 179-3933
  • Mfr. Part No. NTCASCWE3103J
Subtotal (1 bag of 10 units)
SGD44.89(exc. GST)
SGD4.489/unit
Temporarily out of stock
TDK NTC Thermistor, NTC Type 10 kΩ, 0603 0.3 mm 0.6 mm 3 mm
  • RS Stock No. 202-5370P
  • Mfr. Part No. NTCG063JF223HTBX
Subtotal 50 units (supplied on a continuous strip)
SGD4.30(exc. GST)
SGD0.086/unit
In Stock
Sollatek, AVS30 Surge Suppressor Unit 320V ac Maximum Voltage Rating 6.5 kA Maximum Surge Current Surge/Spike Protection
  • RS Stock No. 311-5868
  • Mfr. Part No. 91300000
Subtotal (1 unit)
SGD151.70(exc. GST)
SGD151.70/unit
Temporarily out of 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)
SGD134.90(exc. GST)
SGD1.349/unit
Last RS stock
Panasonic, V Surge Absorber 360 pF 50 A, Clamping 775 V, Varistor 470 V
  • RS Stock No. 785-8913
  • Mfr. Part No. ERZE11A471
Subtotal (1 pack of 25 units)
SGD10.70(exc. GST)
SGD0.428/unit
In Stock
BC Components Thermistor, NTC Type 470 kΩ 9 mm 3.3 mm 3 mm
  • RS Stock No. 538-0806
  • Mfr. Part No. NTCLE100E3102JB0
Subtotal (1 pack of 5 units)
SGD4.47(exc. GST)
SGD0.894/unit
Temporarily out of stock
TDK NTC Thermistor, NTC Type 220 Ω 2 mm 5.5 mm 5 mm
  • RS Stock No. 152-7139
  • Mfr. Part No. B57164K0221K000
Subtotal (1 pack of 10 units)
SGD7.61(exc. GST)
SGD0.761/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)
SGD21.53(exc. GST)
SGD21.53/unit
In Stock
TDK Thermistor, PTC Type 250 Ω 9 mm 25 mm 3 mm
  • RS Stock No. 191-1686P
  • Mfr. Part No. B59008C0070A040
Subtotal 1 unit (supplied in a bag)
SGD1.52(exc. GST)
SGD1.52/unit
Temporarily out of stock
TDK, CT/B Multilayer Varistor 2.5 A, Clamping 65 V
  • RS Stock No. 775-2795P
  • Mfr. Part No. B72530E0250K062
Subtotal 50 units (supplied on a continuous strip)
SGD26.00(exc. GST)
SGD0.52/unit
In Stock
TDK Thermistor, NTC Type 1 Ω 7 mm 15 mm 7 mm
  • RS Stock No. 216-1387P
  • Mfr. Part No. B57237S0109M000
Subtotal 1 unit (supplied in a bag)
SGD1.40(exc. GST)
SGD1.40/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)
SGD23.52(exc. GST)
SGD4.704/unit
Currently unavailable
Phoenix Contact, VAL Surge Protection Plug 385V ac Maximum Voltage Rating 40 kA Maximum Surge Current Type 1 Surge
  • RS Stock No. 135-587
  • Mfr. Part No. 2910338
Subtotal (1 unit)
SGD101.39(exc. GST)
SGD101.39/unit
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