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

4477 Products showing for Surge Protection Components

1 of 224
In Stock
Vishay Thermistor, NTC Type 220 Ω 8 mm 24 mm 4 mm
  • RS Stock No. 381-469
  • Mfr. Part No. NTCLE100E3221JB0
Subtotal (1 pack of 5 units)
€2.39(exc. VAT)
€0.478/unit
In Stock
Bourns, MOV-14D Metal Oxide Varistor 460 pF 50 A, Clamping 2970 V, Varistor 430 V, Molded Radial
  • RS Stock No. 851-8322
  • Mfr. Part No. MOV-14D431K
Subtotal (1 unit)
€0.43(exc. VAT)
€0.43/unit
In Stock
TDK Thermistor, NTC Type 10 kΩ 2 mm 3 mm 5 mm
  • RS Stock No. 191-2263
  • Mfr. Part No. B57164K0103J000
Subtotal (1 pack of 5 units)
€2.05(exc. VAT)
€0.41/unit
In Stock
RS PRO Thermistor, NTC Type 5 kΩ 63.5 mm 63.5 mm 2.4 mm
  • RS Stock No. 151-221
Subtotal (1 unit)
€4.89(exc. VAT)
€4.89/unit
In Stock
Vishay Thermistor, PTC Type 10 mm 30 mm 5.5 mm
  • RS Stock No. 252-771
  • Mfr. Part No. PTCCL05H150HBE
Subtotal (1 pack of 5 units)
€3.22(exc. VAT)
€0.644/unit
In Stock
Phoenix Contact, TTC Surge Protector 30V dc Maximum Voltage Rating Surge Protection Device
  • RS Stock No. 135-7121
  • Mfr. Part No. 2906851
Subtotal (1 unit)
€21.01(exc. VAT)
€21.01/unit
In Stock
TDK Thermistor, NTC Type 470 Ω 2 mm 3 mm 5 mm
  • RS Stock No. 191-2229P
  • Mfr. Part No. B57164K0471J000
Subtotal 5 units (supplied in a bag)
€2.78(exc. VAT)
€0.556/unit
In Stock
TDK Thermistor, NTC Type 470 Ω 2 mm 3 mm 5 mm
  • RS Stock No. 191-2229
  • Mfr. Part No. B57164K0471J000
Subtotal (1 pack of 5 units)
€2.78(exc. VAT)
€0.556/unit
In Stock
Vishay Thermistor, NTC Type 2.7 kΩ 9 mm 3.3 mm 3 mm
  • RS Stock No. 754-6639
  • Mfr. Part No. NTCLE100E3272JB0
Subtotal (1 pack of 5 units)
€2.30(exc. VAT)
€0.46/unit
Last RS stock
Murata Thermistor, NTC Type 10 kΩ, 0402 0.5 mm 1 mm 0.5 mm
  • RS Stock No. 725-9041
  • Mfr. Part No. NCP15XH103F03RC
Subtotal (1 pack of 10 units)
€0.11(exc. VAT)
€0.011/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)
€1.15(exc. VAT)
€1.15/unit
Temporarily out of 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)
€4.89(exc. VAT)
€4.89/unit
In Stock
Sollatek, Hivoltguard Surge Suppressor Unit 230V Maximum Voltage Rating 6.5 kA Maximum Surge Current Overvoltage
  • RS Stock No. 311-5880
  • Mfr. Part No. 92615000
Subtotal (1 unit)
€53.33(exc. VAT)
€53.33/unit
In Stock
Panasonic, V Surge Absorber 3.4 nF 2.5 A, Clamping 53 V, Varistor 27 V
  • RS Stock No. 720-9790
  • Mfr. Part No. ERZV07D270
Subtotal (1 pack of 10 units)
€1.30(exc. VAT)
€0.13/unit
Last RS stock
TDK Thermistor, NTC Type 3 kΩ 6.5 mm 50 mm 2.41 mm
  • RS Stock No. 629-8708
  • Mfr. Part No. B57863S0302F040
Subtotal (1 unit)
€2.45(exc. VAT)
€2.45/unit
In Stock
TDK Thermistor, NTC Type 3 kΩ 6.5 mm 2.41 mm
  • RS Stock No. 706-2774
  • Mfr. Part No. B57861S0302F040
Subtotal (1 unit)
€1.94(exc. VAT)
€1.94/unit
Temporarily out of stock
Vishay, VDRS - E Metal Oxide Varistor 55 pF 5 A, Clamping 695 V, Varistor 430 V
  • RS Stock No. 178-087
  • Mfr. Part No. VDRS05C275BSE
Subtotal (1 pack of 5 units)
€3.37(exc. VAT)
€0.674/unit
In Stock
TDK Thermistor, NTC Type 100 Ω 2 mm 3 mm 5 mm
  • RS Stock No. 191-2213
  • Mfr. Part No. B57164K0101J000
Subtotal (1 pack of 5 units)
€2.78(exc. VAT)
€0.556/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)
€1.40(exc. VAT)
€0.28/unit
In Stock
Vishay Thermistor, NTC Type 10 kΩ 9 mm 3.3 mm 3 mm
  • RS Stock No. 754-6645P
  • Mfr. Part No. NTCLE100E3103JB0
Subtotal 5 units (supplied as a tape)
€2.21(exc. VAT)
€0.442/unit
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