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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

    4228 Products showing for Surge Protection Components

    1 of 212
    Bourns, MOV-10DxxxK Metal Oxide Varistor 25A, Clamping 710V, Varistor 430V
    • RS Stock No. 233-0777
    • Mfr. Part No. MOV-10D431K
    Each (In a Pack of 10)
    SGD0.304
    EPCOS Thermistor, 5Ω Resistance, NTC Type, 14.5 x 7 x 22mm
    • RS Stock No. 769-1886
    • Mfr. Part No. B57213P0509M301
    Each (In a Pack of 5)
    SGD1.252
    EPCOS Thermistor, 1Ω Resistance, NTC Type, 15 x 7mm
    • RS Stock No. 216-1387
    • Mfr. Part No. B57237S0109M000
    Each
    SGD1.06
    EPCOS, Standard Metal Oxide Varistor 540pF 100A, Clamping 840V, Varistor 510V
    • RS Stock No. 289-7711
    • Mfr. Part No. B72220S0321K101
    Each (In a Pack of 5)
    SGD0.982
    EPCOS Thermistor, 2.5Ω Resistance, NTC Type, 21 x 7mm
    • RS Stock No. 211-8024
    • Mfr. Part No. B57364S0259M000
    Each
    SGD3.15
    Panasonic, V Surge Absorber 7nF 10A, Clamping 77V, Varistor 39V
    • RS Stock No. 720-9926
    • Mfr. Part No. ERZV14D390
    Each (In a Pack of 5)
    SGD0.83
    Littelfuse, VA Varistor 14.73nF 10A, Clamping 43V, Varistor 26V
    • RS Stock No. 252-703
    • Mfr. Part No. V22ZA3P
    Each (In a Pack of 5)
    SGD0.778
    Phoenix Contact, LIT 1X2-24 Surge Protector 24 V dc Maximum Voltage Rating 20kA Maximum Surge Current Surge Arrester
    • RS Stock No. 802-6678
    • Mfr. Part No. 2804610
    Each
    SGD146.30
    Vishay NTC Thermistor, 10kΩ Resistance, NTC Type, 2.5 x 2.5 x 5.5mm
    • RS Stock No. 179-3849
    • Mfr. Part No. NTCLE213E3103FLB0
    Each (In a Bag of 20)
    SGD1.463
    Molex NTC Thermistor, NTC Type
    • RS Stock No. 230-2066
    • Mfr. Part No. 215272-1603
    Each (In a Pack of 5)
    SGD2.288
    Phoenix Contact, CN-UFB-5DC/E75 Surge Protection Connector 5 V Maximum Voltage Rating Attachment Plug
    • RS Stock No. 220-3863
    • Mfr. Part No. 2763604
    Each
    SGD236.58
    EPCOS Thermistor, 1Ω Resistance, NTC Type, 31 x 7mm
    • RS Stock No. 121-8215
    • Mfr. Part No. B57127P0109M301
    Each (In a Bag of 5)
    SGD2.444
    Eaton, SD Surge Suppressor Unit 22 V ac, 32 V dc Maximum Voltage Rating 20kA Maximum Surge Current Surge Protection
    • RS Stock No. 251-3823
    Each
    SGD568.02
    Phoenix Contact 20 V ac, 28 V dc 20kA PT Protective Plug, DIN Rail, Screw Mount Mounting
    • RS Stock No. 802-8201
    • Mfr. Part No. 2856032
    Each
    SGD208.12
    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
    SGD672.51
    Eaton, MA15 Surge Suppressor Unit 240 V dc, 280 V dc Maximum Voltage Rating 12kA Maximum Surge Current 1 Phase
    • RS Stock No. 618-9610
    • Mfr. Part No. MA15/D/2/SI
    Each
    SGD433.13
    Phoenix Contact, S-PT-EX-24DC-1/2 Surge Protector 24 V dc Maximum Voltage Rating 20kA Maximum Surge Current Surge
    • RS Stock No. 802-6558
    • Mfr. Part No. 2800035
    Each
    SGD221.12
    EPCOS, EHV 600V 25kA, Through Hole 2 Electrode Arrester Gas Discharge Tube
    • RS Stock No. 703-1048
    • Mfr. Part No. B88069X2880S102
    Each (In a Pack of 5)
    SGD2.812
    EPCOS, EHV 90V 5kA, Through Hole 2 Electrode Arrester Gas Discharge Tube
    • RS Stock No. 320-8926
    • Mfr. Part No. B88069X0720S102
    Each
    SGD1.85
    Littelfuse, LA Metal Oxide Varistor 1nF 50A, Clamping 340V, Varistor 228V
    • RS Stock No. 543-4874
    • Mfr. Part No. V130LA10AP
    Each (In a Pack of 5)
    SGD0.712
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