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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

    4474 Products showing for Surge Protection Components

    2 of 224
    Bourns, AV Varistor 780pF 1A, Clamping 54V, Varistor 22V, 1206
    • RS stock no. 209-8092P
    • Mfr. Part No. AV20K1206201NIR1
    Each (Supplied on a Reel)
    R 5,308
    Bourns, 2051 90V 2kA, SMD 2 Electrode Arrester Gas Discharge Tube
    • RS stock no. 733-4965
    • Mfr. Part No. 2051-09-SM-RPLF
    Each (In a Pack of 5)
    R 13,112
    EPCOS Thermistor, 3.7Ω Resistance, PTC Type, 22 x 5 x 25.5mm
    • RS stock no. 191-1771P
    • Mfr. Part No. B59830C0120A070
    Each (Supplied in a Bag)
    R 39,76
    Bourns, AV Varistor 370pF 1A, Clamping 44V, Varistor 27V, 0805
    • RS stock no. 209-8082P
    • Mfr. Part No. AV17K0805121NIR1
    Each (Supplied on a Reel)
    R 4,541
    Eaton Surge Suppressor Unit 120 V ac Maximum Voltage Rating 18kA Maximum Surge Current Mains Surge Protector
    • RS stock no. 618-9597
    • Mfr. Part No. MA15/D/1/SI/RS
    Each
    R 4 193,81
    EPCOS Thermistor, 10Ω Resistance, NTC Type, 21 x 7mm
    • RS stock no. 211-8002
    • Mfr. Part No. B57364S0100M000
    Each
    R 38,72
    Murata Thermistor, 10kΩ Resistance, NTC Type, 0603 (1608M)
    • RS stock no. 840-5440
    • Mfr. Part No. NCP18XV103J03RB
    Each (In a Pack of 25)
    R 2,892
    Vishay Thermistor, 10kΩ Resistance, NTC Type, 3.3 x 3 x 9mm
    • RS stock no. 754-6645
    • Mfr. Part No. NTCLE100E3103JB0
    Each (In a Pack of 5)
    R 10,418
    Bourns, MOV-14D Metal Oxide Varistor 430pF 50A, Clamping 775V, Varistor 470V
    • RS stock no. 851-8335
    • Mfr. Part No. MOV-14D471K
    Each
    R 8,02
    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
    Dehn, DG Modular Surge Protector 440 V Maximum Voltage Rating 40kA Maximum Surge Current Type 2 Arrester
    • RS stock no. 847-0961
    • Mfr. Part No. DG M TNC 440 FM
    Each
    R 9 309,02
    EPCOS Thermistor, 25Ω Resistance, PTC Type, 9 x 5 x 12.5mm
    • RS stock no. 191-1822P
    • Mfr. Part No. B59870C0120A070
    Each (Supplied in a Box)
    R 33,99
    EPCOS, Standard Metal Oxide Varistor 19pF 20A, Clamping 43V, Varistor 22V
    • RS stock no. 289-7553
    • Mfr. Part No. B72220S0140K101
    Each (In a Pack of 5)
    R 26,064
    EPCOS Thermistor, 25Ω Resistance, PTC Type, 9 x 5 x 12.5mm
    • RS stock no. 191-1822
    • Mfr. Part No. B59870C0120A070
    Each
    R 33,99
    EPCOS Thermistor, 33Ω Resistance, NTC Type, 15 x 7mm
    • RS stock no. 216-1438
    • Mfr. Part No. B57237S0330M000
    Each
    R 19,95
    Bourns, 1320 Surge Arrester 150 V dc Maximum Voltage Rating 40kA Maximum Surge Current 2 Pole Protector
    • RS stock no. 785-8180
    • Mfr. Part No. 1320-S-110
    Each
    R 2 738,98
    Amphenol Advanced Sensors NTC Thermistor, NTC Type
    • RS stock no. 257-9500
    • Mfr. Part No. CL-101
    Each (In a Pack of 2)
    R 36,925
    ABB, OVR Surge Protection Device 400 V ac Maximum Voltage Rating 80kA Maximum Surge Current
    • RS stock no. 231-9984
    • Mfr. Part No. 2CTB815710R1900 OVR T1-T2 3N 12.5-275s
    Each
    R 12 097,42
    EPCOS Thermistor, 125Ω Resistance, PTC Type, 1210 (3225M), 3.2 x 2.5 x 1.6mm
    • RS stock no. 496-2722
    • Mfr. Part No. B59707A0120A062
    Each (In a Pack of 5)
    R 18,786
    Bourns, 2051 200V 2kA, SMD 2 Electrode Arrester Gas Discharge Tube
    • RS stock no. 733-4978P
    • Mfr. Part No. 2051-20-SM-RPLF
    Each (Supplied on a Reel)
    R 11,08
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