Thermal Breakers | Thermal Circuit Breakers | RS
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    Thermal Breakers

    Thermal breakers protect circuits from excess current in a similar way to a fuse, however, they often feature a switch allowing them to be reset if tripped. Common types of thermal breakers include thermal magnetic circuit breakers and thermal automotive circuit breakers.

    Types of Thermal Breakers

    Thermal magnetic circuit breakers are devices that provide protection against overcurrent in circuits. Circuit breakers use an automatically operated electrical switch to disrupt the flow of current when an overload or short circuit is detected. Thermal magnetic circuit breakers do this using an electromagnet and bimetallic strips.

    Circuit breakers provide more sophisticated protection against overcurrent than a simple fuse. Fuses simply burn out and have to be replaced, whereas circuit breakers just need to be reset.

    Thermal automotive circuit breakers are devices used to break the flow of current in automotive circuits, in order to protect them against a fault such as overcurrent or short circuit.

    The thermal aspect of this type of circuit breaker allows for smaller overcurrents over a longer period of time, but will quickly trip the circuit for larger overcurrents. This is useful in the case of motors, as there will be a small overcurrent each time the engine is switched on for a short length of time, which should not trip the circuit.

    What are thermal magnetic circuit breakers used for?

    Thermal magnetic circuit breakers are most often used in distribution boards. They make up part of the subsidiary circuits in the broader electrical supply system, protecting against overcurrent.

    What are thermal automotive circuit breakers used for?

    Thermal automotive circuit breakers are used to protect electrical networks in most types of vehicles, including cars, vans, buses, and boats.

    1414 Products showing for Thermal Breakers

    ETA
    16A
    5
    -
    50 V DC, 240 V AC
    28mm
    3120-N
    -
    -
    -
    -
    -
    -
    -
    -
    ETA
    2A
    1
    -
    48V
    19mm
    106-P30
    -
    -
    -
    -
    -
    -
    -
    Panel Mount
    ETA
    20A
    1
    -
    32V dc
    20mm
    1610
    -
    -
    -
    -
    -
    -
    -
    -
    ETA
    70A
    1
    -
    240V
    18mm
    4130
    -
    Thermal
    Button
    -
    240V
    -
    -
    Panel Mount
    Schneider Electric
    4A
    1P + N
    -
    -
    15mm
    -
    -
    -
    -
    -
    -
    Yes
    Green Premium
    DIN Rail Mount
    TE Connectivity
    7A
    1
    -
    50 V dc, 250V ac
    16.76mm
    W58
    -
    Thermal
    -
    -
    -
    -
    -
    -
    ETA
    25A
    1
    ETA
    250V ac
    -
    2-5700
    -
    -
    -
    -
    -
    -
    -
    Panel Mount
    ETA
    20A
    1
    -
    250V ac
    -
    2-5700
    -
    -
    -
    -
    -
    -
    -
    Panel Mount
    TE Connectivity
    10A
    1
    -
    250V ac
    14.60mm
    W54
    -
    Thermal
    -
    -
    -
    -
    -
    -
    ETA
    2A
    1
    -
    250V
    8.2mm
    1180
    -
    Thermal
    Button
    -
    250V
    -
    -
    DIN Rail Mount
    Phoenix Contact
    4A
    1
    -
    65 V dc, 250V ac
    8.2mm
    TCP 4A
    -
    -
    -
    -
    250V
    -
    -
    -
    ETA
    10A
    1
    -
    240V
    14.5mm
    3130
    -
    Thermal
    Rocker
    -
    240V
    -
    -
    Snap In
    ETA
    16A
    2
    -
    50 V DC, 240 V AC
    25mm
    3120-N
    -
    -
    -
    -
    -
    -
    -
    -
    Schurter
    16A
    1
    -
    48 V dc, 240V ac
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    TE Connectivity
    5A
    1
    -
    32 V dc, 250V ac
    19.30mm
    W28
    -
    Thermal
    -
    -
    -
    -
    -
    -
    Schurter
    16A
    2
    -
    60 V dc, 240V ac
    -
    TA45
    -
    Thermal
    Rocker
    -
    240V
    -
    -
    Panel Mount
    TE Connectivity
    30A
    1
    -
    50 V dc, 240V ac
    17.52mm
    W31
    -
    Thermal
    -
    -
    -
    -
    -
    -
    TE Connectivity
    10A
    1
    -
    250V ac
    -
    Potter & Brumfield W54
    -
    -
    -
    -
    -
    -
    -
    Panel Mount
    TE Connectivity
    2A
    1
    -
    50 V dc, 250V ac
    16.76mm
    W58
    -
    Thermal
    -
    -
    -
    -
    -
    -
    TE Connectivity
    1A
    1
    -
    32 V dc, 250V ac
    19.30mm
    W28
    -
    Thermal
    -
    -
    -
    -
    -
    -
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