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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

    4473 Products showing for Surge Protection Components

    8 of 224
    BC Components Thermistor, 1kΩ Resistance, NTC Type, 3.3 x 3 x 9mm
    • RS stock no. 538-0806
    • Mfr. Part No. NTCLE100E3102JB0
    Each (In a Pack of 5)
    R 9,964
    EPCOS Thermistor, 3kΩ Resistance, NTC Type, 2.41 x 6.5mm
    • RS stock no. 706-2774
    • Mfr. Part No. B57861S0302F040
    Each
    R 40,93
    EPCOS, Standard Metal Oxide Varistor 500pF 25A, Clamping 340V, Varistor 205V
    • RS stock no. 204-2090P
    • Mfr. Part No. B72210S0131K101
    Each (Supplied in a Bag)
    R 12,592
    Vishay Thermistor, 4.7kΩ Resistance, NTC Type, 3.3 x 3 x 9mm
    • RS stock no. 754-6648
    • Mfr. Part No. NTCLE100E3472JB0
    Each (In a Pack of 5)
    R 10,334
    EPCOS Thermistor, 5Ω Resistance, NTC Type, 21 x 7mm
    • RS stock no. 211-8030
    • Mfr. Part No. B57364S0509M000
    Each
    R 38,86
    EPCOS, Standard Metal Oxide Varistor 440pF 50A, Clamping 710V, Varistor 430V
    • RS stock no. 289-7187
    • Mfr. Part No. B72214S0271K101
    Each (In a Pack of 5)
    R 12,786
    Vishay PTC Thermistor, 22Ω Resistance, PTC Type, 8.5 x 5.5mm
    • RS stock no. 179-3928
    • Mfr. Part No. PTCCL09H171HBE
    Each (In a Bag of 20)
    R 18,349
    EPCOS, Standard Metal Oxide Varistor 2.4nF 5A, Clamping 110V, Varistor 56V
    • RS stock no. 289-6780
    • Mfr. Part No. B72210S0350K101
    Each (In a Pack of 5)
    R 12,448
    Vishay Thermistor, 1kΩ Resistance, NTC Type, 3.3 x 3 x 9mm
    • RS stock no. 754-6632
    • Mfr. Part No. NTCLE100E3102JB0
    Each (In a Pack of 5)
    R 10,048
    EPCOS, AdvancedD Metal Oxide Varistor 1.7nF 100A, Clamping 360V, Varistor 220V, 20 mm
    • RS stock no. 241-6777
    • Mfr. Part No. B72220S2141K101
    Each
    R 22,06
    EPCOS, Standard Metal Oxide Varistor 1.55nF 100A, Clamping 395V, Varistor 240V
    • RS stock no. 289-7272
    • Mfr. Part No. B72220S0151K101
    Each (In a Pack of 5)
    R 26,12
    EPCOS Thermistor, 25Ω Resistance, PTC Type, 9 x 5 x 12.5mm
    • RS stock no. 212-0140
    • Mfr. Part No. B59870C0080A070
    Each
    R 22,96
    EPCOS Thermistor, 3kΩ Resistance, NTC Type, 2.4 x 6.5mm
    • RS stock no. 528-8508
    • Mfr. Part No. B57861S0302J040
    Each
    R 24,11
    EPCOS, SuperioR-MP Metal Oxide Varistor 730pF 100A, Clamping 1120V, Varistor 680V
    • RS stock no. 711-8189
    • Mfr. Part No. B72220P3421K101
    Each (In a Pack of 2)
    R 49,815
    Vishay Thermistor, 10kΩ Resistance, NTC Type, 3.3 x 3 x 9mm
    • RS stock no. 754-6645P
    • Mfr. Part No. NTCLE100E3103JB0
    Each (Supplied as a Tape)
    R 10,418
    EPCOS, Standard Metal Oxide Varistor 245pF 25A, Clamping 650V, Varistor 390V
    • RS stock no. 289-7064
    • Mfr. Part No. B72210S0251K101
    Each (In a Pack of 5)
    R 12,648
    EPCOS Thermistor, 10kΩ Resistance, NTC Type, 0805 (2012M), 2 x 1.25 x 1.3mm
    • RS stock no. 706-2727
    • Mfr. Part No. B57471V2103J062
    Each (In a Pack of 5)
    R 6,36
    EPCOS NTC Thermistor, NTC Type
    • RS stock no. 152-7134
    • Mfr. Part No. B57861S0103A039
    Each
    R 84,77
    EPCOS Thermistor, 25Ω Resistance, PTC Type, 6.5 x 3.5mm
    • RS stock no. 706-2869
    • Mfr. Part No. B59980C0120A070
    Each
    R 25,43
    EPCOS Switching Spark Gap, 230V Breakdown Voltage, 300A, 25Hz Max. Switching Frequency, 2000000
    • RS stock no. 162-0261
    • Mfr. Part No. B88069X0680T502
    Each (On a Reel of 500)
    R 36,904
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