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    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

    4531 Products showing for Surge Protection Components

    1 of 227
    Roxburgh EMC, DVS Varistor, Varistor 240V
    • RS Stock No. 240-078
    • Mfr. Part No. DVS240
    Each
    £45.77
    Roxburgh EMC, DVS Varistor, Varistor 24V
    • RS Stock No. 240-040
    • Mfr. Part No. DVS24
    Each
    £44.39
    Roxburgh EMC, DVS Varistor
    • RS Stock No. 240-062
    • Mfr. Part No. DVS110
    Each
    £42.39
    Bourns, MOV-14D Metal Oxide Varistor 430pF 50A, Clamping 775V, Varistor 470V
    • RS Stock No. 851-8335
    • Mfr. Part No. MOV-14D471K
    Each
    £0.30
    Littelfuse, LA Metal Oxide Varistor 1nF 100A, Clamping 620V, Varistor 354 → 413V
    • RS Stock No. 760-6939
    • Mfr. Part No. V250LA40BP
    Each (In a Pack of 5)
    £0.436
    RS PRO Metal Oxide Varistor
    • RS Stock No. 240-242
    Each
    £53.05
    MITSUBISHI MATERIALS, DSA 1500V 2kA, Through Hole Surge Absorber Gas Discharge Tube
    • RS Stock No. 525-8866
    • Mfr. Part No. DSA-152MA-05(UL)
    Each
    £6.07
    Littelfuse, LA Metal Oxide Varistor 800pF 50A, Clamping 395V, Varistor 268V
    • RS Stock No. 543-4953
    • Mfr. Part No. V150LA10AP
    Each (In a Pack of 5)
    £0.526
    Littelfuse, LA Metal Oxide Varistor 200pF 25A, Clamping 710V, Varistor 473V
    • RS Stock No. 171-0001
    • Mfr. Part No. V275LA10P
    Each (In a Bag of 1000)
    £0.156
    RS PRO Thermistor, 5Ω Resistance, NTC Type, 15 x 6mm
    • RS Stock No. 171-1819
    Each (On a Reel of 100)
    £0.701
    RS PRO Thermistor, 10Ω Resistance, NTC Type, 10 x 5mm
    • RS Stock No. 516-7805
    Each
    £2.02
    Littelfuse, LA Metal Oxide Varistor 450pF 100A, Clamping 1410V, Varistor 805 → 960V
    • RS Stock No. 760-7055
    • Mfr. Part No. V575LA80BP
    Each (In a Pack of 5)
    £0.858
    RS PRO Surge Suppressor Unit 230 V ac Maximum Voltage Rating 13.5kA Maximum Surge Current Mains Protector
    • RS Stock No. 206-7522
    Each
    £43.35
    MITSUBISHI MATERIALS, DSA 3000V 2kA, Through Hole Surge Absorber Gas Discharge Tube
    • RS Stock No. 525-8894
    • Mfr. Part No. DSA-302MA-05(UL)
    Each
    £7.08
    Wurth Elektronik, WE-VD Varistor 860pF 100A, Clamping 710V, Varistor 430V
    • RS Stock No. 669-4370
    • Mfr. Part No. 820422711
    Each (In a Pack of 5)
    £0.916
    Littelfuse, LA Metal Oxide Varistor 900pF 100A, Clamping 710V, Varistor 473V
    • RS Stock No. 543-5142
    • Mfr. Part No. V275LA40AP
    Each (In a Pack of 5)
    £0.732
    Littelfuse, LA Metal Oxide Varistor 450pF 50A, Clamping 710V, Varistor 473V
    • RS Stock No. 171-0002
    • Mfr. Part No. V275LA20AP
    Each (In a Bag of 700)
    £0.203
    Littelfuse, SL10021A 108V 10kA, Radial 3 Electrode Arrester Gas Discharge Tube
    • RS Stock No. 760-6807
    • Mfr. Part No. SL1021A090R
    Each (In a Pack of 5)
    £2.316
    KYOCERA AVX Thermistor, 150Ω Resistance, NTC Type, 6.3 x 4mm
    • RS Stock No. 697-4519
    • Mfr. Part No. ND06J00151KDC
    Each (In a Pack of 5)
    £0.726
    Littelfuse, LA Metal Oxide Varistor 500pF 50A, Clamping 650V, Varistor 429V
    • RS Stock No. 800-7059
    • Mfr. Part No. V250LA20AP
    Each (In a Pack of 10)
    £0.417
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