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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

    4425 Products showing for Surge Protection Components

    1 of 222
    EPCOS, Advanced Metal Oxide Varistor 400pF 50A, Clamping 775V, Varistor 470V
    • RS Stock No. 138-9279
    • Mfr. Part No. B72214S2301K101
    Each (In a Bag of 20)
    $0.705
    Huber+Suhner, SSC-N230 Coaxial Surge Protection 170 V dc Maximum Voltage Rating 20kA Maximum Surge Current Coaxial
    • RS Stock No. 132-8146
    • Mfr. Part No. SSC-N230/01
    Each
    $128.51
    EPCOS, Standard Metal Oxide Varistor 9.35nF 20A, Clamping 93V, Varistor 47V
    • RS Stock No. 289-7597
    • Mfr. Part No. B72220S0300K101
    Each (In a Pack of 5)
    $1.364
    Littelfuse, LA Metal Oxide Varistor 900pF 100A, Clamping 680V, Varistor 389 → 453V
    • RS Stock No. 760-6942
    • Mfr. Part No. V275LA40BP
    Each (In a Pack of 5)
    $1.446
    BC Components Thermistor, 10kΩ Resistance, NTC Type, 3.3 x 3 x 9mm
    • RS Stock No. 538-0654
    • Mfr. Part No. NTCLE100E3103HB0
    Each (In a Pack of 5)
    $1.59
    Vishay NTC Thermistor, 100kΩ Resistance, NTC Type, 7.2 x 15.7mm
    • RS Stock No. 179-3938
    • Mfr. Part No. NTCALUG01A104F
    Each (In a Bag of 10)
    $3.285
    EPCOS Thermistor, 50Ω Resistance, NTC Type, 11.5 x 6 x 16mm
    • RS Stock No. 185-7822
    • Mfr. Part No. B57236S0500M000
    Each (In a Pack of 5)
    $1.066
    Littelfuse, LA Metal Oxide Varistor 800pF 50A, Clamping 395V, Varistor 268V
    • RS Stock No. 170-9908
    • Mfr. Part No. V150LA10AP
    Each (In a Bag of 700)
    $0.439
    Phoenix Contact, TTC-6P-3-HF-F-M-12DC-PT-I Surge Protector 15 V dc Maximum Voltage Rating 10kA Maximum Surge Current
    • RS Stock No. 135-7157
    • Mfr. Part No. 2906796
    Each
    $288.00
    ABB, OVR Surge Protection Device 275 V Maximum Voltage Rating 40kA Maximum Surge Current Surge Protection Device
    • RS Stock No. 175-2594
    • Mfr. Part No. 2CTB815704R0800 OVR T2 3N 40-275s P TS QS
    Each
    $397.33
    Vishay NTC Thermistor, 10kΩ Resistance, NTC Type, 7.2 x 15.7mm
    • RS Stock No. 179-3927
    • Mfr. Part No. NTCALUG01A103J
    Each (In a Bag of 10)
    $2.42
    EPCOS Thermistor, 33Ω Resistance, NTC Type, 8.5 x 6 x 13mm
    • RS Stock No. 185-7856
    • Mfr. Part No. B57153S0330M000
    Each (In a Pack of 5)
    $0.94
    EPCOS Thermistor, 5kΩ Resistance, NTC Type, 1.3 x 2.2mm
    • RS Stock No. 484-0133
    • Mfr. Part No. B57550G502J
    Each
    $5.05
    Phoenix Contact, PT 4-BE Surge Protector 120 V ac Maximum Voltage Rating Surge Protector
    • RS Stock No. 241-6070
    • Mfr. Part No. 2839402
    Each (In a Pack of 10)
    $163.722
    BC Components, VDR Metal Oxide Varistor 170pF 10A, Clamping 600V, Varistor 360V
    • RS Stock No. 538-0783
    • Mfr. Part No. VDRS07H230BSE
    Each
    $0.45
    EPCOS Thermistor, 1kΩ Resistance, NTC Type
    • RS Stock No. 167-8576
    • Mfr. Part No. B57045K0102K000
    Each (In a Box of 500)
    $2.199
    Phoenix Contact, TTC-6P-1X2-24DC-PT-I Surge Protector 30 V dc Maximum Voltage Rating 10kA Maximum Surge Current Surge
    • RS Stock No. 135-7159
    • Mfr. Part No. 2906815
    Each
    $252.24
    Eaton, SLP Surge Suppressor Unit 32 V Maximum Voltage Rating 20kA Maximum Surge Current Surge Protection Device
    • RS Stock No. 618-9777
    • Mfr. Part No. SLP32D/RS
    Each
    $534.65
    Bourns, 1977 Coaxial Surge Protection 130 V dc Maximum Voltage Rating 20kA Maximum Surge Current Coaxial Surge Protector
    • RS Stock No. 785-8193
    • Mfr. Part No. 1977-09-A00
    Each
    $224.00
    EPCOS, B88069X Surge Suppressor Unit 230 V dc Maximum Voltage Rating 15kA Maximum Surge Current 3 Pole Arrester
    • RS Stock No. 191-1579
    • Mfr. Part No. B88069X8910B502
    Each
    $4.07
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