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
Surge Suppressor Units
Switching Spark Gaps
Thermistor ICs
Varistors

4483 Products showing for Surge Protection Components

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In Stock
TDK Thermistor, NTC Type 10 kΩ 6.5 mm 2.41 mm
  • RS stock no. 528-8536
  • Mfr. Part No. B57861S0103J040
Subtotal (1 unit)
R 22,68(exc. VAT)
R 22,68/unit
In Stock
TDK, EHV 230 V dc 10 kA, Through Hole 2 Electrode Arrester Gas Discharge Tube
  • RS stock no. 191-1513
  • Mfr. Part No. B88069X2930C102
Subtotal (1 unit)
R 33,69(exc. VAT)
R 33,69/unit
In Stock
TDK Thermistor, NTC Type 1 Ω 18 mm 11 mm 7 mm
  • RS stock no. 185-7777
  • Mfr. Part No. B57364S0109M000
Subtotal (1 unit)
R 49,61(exc. VAT)
R 49,61/unit
In Stock
TDK Thermistor, NTC Type 15 Ω 7 mm 15 mm 7 mm
  • RS stock no. 216-1393
  • Mfr. Part No. B57237S0150M000
Subtotal (1 unit)
R 20,87(exc. VAT)
R 20,87/unit
In Stock
TDK, Standard Metal Oxide Varistor 6.8 nF 10 A, Clamping 2.97 kV, Varistor 33 V
  • RS stock no. 204-1918
  • Mfr. Part No. B72214S0200K101
Subtotal (1 pack of 5 units)
R 26,48(exc. VAT)
R 5,296/unit
Last RS stock
TDK Thermistor, NTC Type 2 Ω 21 mm 21 mm 7 mm
  • RS stock no. 211-8018P
  • Mfr. Part No. B57364S0209M000
Subtotal 1 unit (supplied in a box)
R 51,83(exc. VAT)
R 51,83/unit
In Stock
Bourns, MOV-14D Metal Oxide Varistor 460 pF 50 A, Clamping 2.97 kV, Varistor 430 V, Molded Radial
  • RS stock no. 851-8322
  • Mfr. Part No. MOV-14D431K
Subtotal (1 unit)
R 8,61(exc. VAT)
R 8,61/unit
In Stock
TDK, Standard Metal Oxide Varistor 1.35 nF 100 A, Clamping 455 V, Varistor 270 V
  • RS stock no. 289-7288
  • Mfr. Part No. B72220S0171K101
Subtotal (1 pack of 5 units)
R 68,87(exc. VAT)
R 13,774/unit
In Stock
Littelfuse, ZA Metal Oxide Varistor 1.62 nF 2.5 A, Clamping 1.24 kV, Varistor 33 V, Radial Leaded Ceramic Disc
  • RS stock no. 800-7084
  • Mfr. Part No. V33ZA1P
Subtotal (1 pack of 25 units)
R 143,55(exc. VAT)
R 5,742/unit
In Stock
Eaton, SD32 Surge Protection Device 32V Maximum Voltage Rating 20 kA Maximum Surge Current Surge Protection Device
  • RS stock no. 144-8697
  • Mfr. Part No. SD32MXX-BCN
Subtotal (1 unit)
R 4 509,28(exc. VAT)
R 4 509,28/unit
Temporarily out of stock
Dehn, DG Modular Surge Protector 440V Maximum Voltage Rating 40 kA Maximum Surge Current Type 2 Arrester
  • RS stock no. 847-0961
  • Mfr. Part No. DG M TNC 440 FM
Subtotal (1 unit)
R 9 076,32(exc. VAT)
R 9 076,32/unit
In Stock
Bourns, BVRA0805 Varistor 1 A, Clamping 30 V
  • RS stock no. 854-219
  • Mfr. Part No. BVRA0805-06PFR
Subtotal (1 tape of 50 units)
R 160,50(exc. VAT)
R 3,21/unit
In Stock
Littelfuse, MLA Varistor Varistor 500 pF 1 A, Clamping 260 V, 1206
  • RS stock no. 760-6986
  • Mfr. Part No. V33MLA1206NH
Subtotal (1 pack of 5 units)
R 90,15(exc. VAT)
R 18,03/unit
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)
R 9 055,94(exc. VAT)
R 9 055,94/unit
In Stock
TDK Thermistor, NTC Type 16 Ω 16 mm 11.5 mm 6 mm
  • RS stock no. 211-7964
  • Mfr. Part No. B57236S0160M000
Subtotal (1 unit)
R 17,47(exc. VAT)
R 17,47/unit
In Stock
Bourns, GMOV Varistor 4 pF 6 kA, Varistor 275 V ac, 350 V dc, Disc
  • RS stock no. 186-2134
  • Mfr. Part No. GMOV-14D271K
Subtotal (1 pack of 5 units)
R 139,62(exc. VAT)
R 27,924/unit
In Stock
Mersen, DC PV Replacement Module 1000V dc Maximum Voltage Rating 40 kA Maximum Surge Current Type 2 SPD
  • RS stock no. 179-3076
  • Mfr. Part No. 44020007 / K2-1000
Subtotal (1 unit)
R 711,17(exc. VAT)
R 711,17/unit
In Stock
Bourns, BVRA0805 Varistor 1 A, Clamping 93 V
  • RS stock no. 854-228
  • Mfr. Part No. BVRA0805-35PFR
Subtotal (1 tape of 50 units)
R 160,50(exc. VAT)
R 3,21/unit
Currently unavailable
TDK, Standard Metal Oxide Varistor 4.5 kA, Clamping 775 V
  • RS stock no. 769-1515
  • Mfr. Part No. B72214S0301K101
Subtotal (1 pack of 10 units)
R 46,93(exc. VAT)
R 4,693/unit
In Stock
TDK Thermistor, NTC Type 1 Ω 31 mm 26 mm 7 mm
  • RS stock no. 185-7763
  • Mfr. Part No. B57464S0109M000
Subtotal (1 unit)
R 93,65(exc. VAT)
R 93,65/unit
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