Surge Protection Devices | Surge Protectors | RS
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    Surge Protection Devices

    Surge protection devices help to protect devices and equipment against changes in the electrical current running through the system. Current spikes or transients can cause significant damage to equipment and is also a safety hazard. You can learn more in our complete guide to industrial surge protection.

    What are surge protection devices used for?

    Surge protection devices involve the use of surge suppressors or protectors and surge arresters.

    Suppressors protect equipment from voltage spikes. They block or short to ground the current in, for instance, power distribution panels, process control systems and heavy industrial systems.

    Arresters protect machinery from external occurrences that cause over-voltage transients like lightning strikes or switching events. These are installed in power transmission and distribution systems.

    Types of surge protection devices

    Four primary types of industrial surge protection exist:

    • Secondary surge arresters fixed to the line side of the service panel to protect against current surges from lightning or switching events.
    • Branch surge panels are fixed to the load side of the main service entrance and offer protection against motor driven and internally generated surges.
    • Power strips protect sensitive electronics with lower voltage and ampere capabilities by blocking current spikes.
    • Surge protection modules provide point-of-use protection by protecting against overvoltage and current spikes.

    782 Products showing for Surge Protection Devices

    Osram
    Surge Protector
    15A
    10kV
    -
    SPD
    -
    Screw Mount
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Schneider Electric
    -
    2.5kA
    -
    Acti 9
    iPRD8
    -
    DIN Rail
    8kA
    -
    -
    -
    -
    -
    -
    -
    Yes
    Green Premium
    -
    Phoenix Contact
    Surge Arrestor
    50kA
    250V ac
    -
    VAL-MS-T1/T2 335/12.5/1+1-FM
    1
    DIN Rail
    12.5kA
    99mm
    35.6mm
    77.5mm
    99 x 35.6 x 77.5mm
    -40°C
    +80°C
    -
    -
    -
    -40 → +80 °C
    Siemens
    Surge Protector
    50kA
    -
    -
    5SD
    3
    DIN Rail
    50kA
    -
    -
    -
    -
    -40°C
    +80°C
    -
    -
    -
    -40 → +80 °C
    Phoenix Contact
    Surge Protector
    4kA
    -
    Isolated Signal Circuits
    -
    3
    DIN Rail
    1kA
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Mersen
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Eaton
    Surge Protector
    -
    110 → 230 V dc, 12 → 110V ac
    -
    -
    1
    DIN Rail
    -
    17.5mm
    105mm
    45mm
    17.5 x 105 x 45mm
    -5°C
    +40°C
    -
    -
    -
    -5 → +40 °C
    Siemens
    Surge Protector
    2A
    230V (Volts)
    5SY17
    5SY
    Single
    DIN Rail
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Okaya Electric Industries
    Surge Protector
    5kA
    -
    -
    LV
    1
    Surface Mount
    500A
    43mm
    36.5mm
    24.5mm
    43 x 36.5 x 24.5mm
    -
    -
    -
    -
    -
    -
    Schneider Electric
    Surge Arrestor
    20kA
    48V dc
    Acti9
    A9L
    -
    Fixed
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Siemens
    Surge Protector
    25kA
    -
    -
    5SD
    3
    DIN Rail
    100kA
    -
    -
    -
    -
    -40°C
    +80°C
    -
    -
    -
    -40 → +80 °C
    Bourns
    Surge Protector
    50kA
    1kV
    -
    1250A
    Single, Three
    DIN Rail
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Siemens
    Surge Protector
    -
    240 → 420V ac
    SIRIUS
    3RT1956
    -
    Clip-On
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Okaya Electric Industries
    Surge Protector
    5kA
    -
    -
    SV
    3
    Surface Mount
    500A
    44mm
    42mm
    37.5mm
    44 x 42 x 37.5mm
    -
    -
    -
    -
    -
    -
    Siemens
    Surge Protector
    25kA
    -
    -
    5SD
    1
    DIN Rail
    40kA
    -
    -
    -
    -
    -40°C
    +80°C
    -
    -
    -
    -40 → +80 °C
    Lovato
    Surge Protector
    50kA
    -
    Monoblock
    SA0B
    Single
    DIN Rail
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Inventronics
    Surge Protector
    5kA
    10kV
    -
    PU
    -
    Surface Mount
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Eaton
    Surge Protector
    10kA
    480V ac
    MTL LS
    LS
    2
    Flange Mount
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Siemens
    Surge Protector
    25kA
    -
    -
    5SD
    3
    DIN Rail
    100kA
    -
    -
    -
    -
    -40°C
    +80°C
    -
    -
    -
    -40 → +80 °C
    Phoenix Contact
    Surge Protector
    20kA
    -
    Surge Protection Device
    TTC
    -
    DIN Rail
    0.5kA
    -
    -
    -
    -
    -40°C
    +80°C
    -
    -
    -
    -40 → +80 °C
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