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

4449 Products showing for Surge Protection Components

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1 of 223
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
Dehn, DG M TNS ACI Surge Arrester 275V Maximum Voltage Rating Type 2/Class Ii
  • RS Stock No. 193-6588
  • Mfr. Part No. DG M TNS ACI 275 FM
Subtotal (1 unit)
€1,049.45(exc. VAT)
€1,049.45/unit
In Stock
Phoenix Contact, PT Surge Protection Plug 180V dc Maximum Voltage Rating
  • RS Stock No. 131-641
  • Mfr. Part No. 2800782
Subtotal (1 unit)
€163.84(exc. VAT)
€163.84/unit
In Stock
WJ Furse, ESP D/TN Surge Suppressor Unit 296V Maximum Voltage Rating 20 kA Maximum Surge Current Telephone Line
  • RS Stock No. 198-0452
  • Mfr. Part No. 7TCA085400R0171 ESP TN
Subtotal (1 unit)
€158.49(exc. VAT)
€158.49/unit
In Stock
Littelfuse, LA Metal Oxide Varistor 900 pF 100 A, Clamping 2700 V, Disc
  • RS Stock No. 760-6942
  • Mfr. Part No. V275LA40BP
Subtotal (1 pack of 5 units)
€3.78(exc. VAT)
€0.756/unit
In Stock
TDK, Standard Metal Oxide Varistor 550 pF 100 A, Clamping 2970 V, Varistor 680 V
  • RS Stock No. 204-2214
  • Mfr. Part No. B72220S0421K101
Subtotal (1 pack of 5 units)
€9.06(exc. VAT)
€1.812/unit
In Stock
Littelfuse, LA Varistor Metal Oxide Varistor 900 pF 100 A, Clamping 2700 V, Varistor 430 V, Disc
  • RS Stock No. 543-5142
  • Mfr. Part No. V275LA40AP
Subtotal (1 pack of 5 units)
€3.83(exc. VAT)
€0.766/unit
In Stock
WJ Furse, ESP D/TN Surge Suppressor Unit 58V Maximum Voltage Rating 20 kA Maximum Surge Current Twisted Pair Surge
  • RS Stock No. 198-0446
  • Mfr. Part No. 7TCA085400R0109 ESP 50D
Subtotal (1 unit)
€158.49(exc. VAT)
€158.49/unit
In Stock
Bourns, GMOV Varistor 4 pF 6000 A, Varistor 275 V ac, 350 V dc, Disc
  • RS Stock No. 186-2134
  • Mfr. Part No. GMOV-14D271K
Subtotal (1 pack of 5 units)
€7.20(exc. VAT)
€1.44/unit
Currently unavailable
TDK, Standard Metal Oxide Varistor 440 pF 50 A, Clamping 2970 V, Varistor 430 V
  • RS Stock No. 289-7187
  • Mfr. Part No. B72214S0271K101
Subtotal (1 pack of 5 units)
€1.13(exc. VAT)
€0.226/unit
In Stock
WJ Furse, ESP D/TN Surge Suppressor Unit 19V Maximum Voltage Rating 20 kA Maximum Surge Current Twisted Pair Surge
  • RS Stock No. 198-0424
  • Mfr. Part No. 7TCA085400R0089 ESP 15D
Subtotal (1 unit)
€158.49(exc. VAT)
€158.49/unit
Limited stock
TDK Thermistor, PTC Type 2.6 Ω 29.5 mm 26 mm 5 mm
  • RS Stock No. 191-1765
  • Mfr. Part No. B59810C0120A070
Subtotal (1 unit)
€9.25(exc. VAT)
€9.25/unit
In Stock
Dehn, BXTU Surge Arrester 180 V dc, 127V ac Maximum Voltage Rating 20 kA Maximum Surge Current Lightning Arrester
  • RS Stock No. 768-1811
  • Mfr. Part No. BXTU ML4 BD 0-180
Subtotal (1 unit)
€568.10(exc. VAT)
€568.10/unit
In Stock
Bourns, 1977 Coaxial Surge Protection 600V dc Maximum Voltage Rating 20 kA Maximum Surge Current Gas Discharge Tube
  • RS Stock No. 785-8222
  • Mfr. Part No. 1977-50-A01
Subtotal (1 unit)
€80.81(exc. VAT)
€80.81/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 100 kΩ 2 mm 3 mm 5 mm
  • RS Stock No. 191-2314
  • Mfr. Part No. B57164K0104J000
Subtotal (1 pack of 5 units)
€2.75(exc. VAT)
€0.55/unit
Temporarily out of stock
Telegartner, J01028A Surge Suppressor Unit 90V Maximum Voltage Rating Type N Arrester
  • RS Stock No. 712-3153
  • Mfr. Part No. J01028A0044
Subtotal (1 unit)
€132.56(exc. VAT)
€132.56/unit
In Stock
TE Connectivity Thermistor, NTC Type 2.25 kΩ 2.4 mm 76 mm 2.4 mm
  • RS Stock No. 893-7234
  • Mfr. Part No. GA2.2K3A1IA
Subtotal (1 unit)
€11.02(exc. VAT)
€11.02/unit
In Stock
WJ Furse, ESP 240 Surge Suppressor Unit 280V Maximum Voltage Rating 10 kA Maximum Surge Current Low Current Mains
  • RS Stock No. 456-8140
  • Mfr. Part No. 7TCA085460R0080 ESP 240-16A
Subtotal (1 unit)
€271.47(exc. VAT)
€271.47/unit
In Stock
TDK Switching Spark Gap, 230 V Breakdown Voltage, 300 A, 25 Hz Max. Switching Frequency
  • RS Stock No. 771-0026
  • Mfr. Part No. B88069X0680T502
Subtotal (1 pack of 5 units)
€16.92(exc. VAT)
€3.384/unit
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