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    Fuses & Circuit Breakers

    Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

    Fuses

    Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

    Circuit breakers

    Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

    Circuit Breakers
    Circuit Breakers
    Earth & Lightning Protection
    Earth & Lightning Protection
    Fuse Holders & Accessories
    Fuse Holders & Accessories
    Fuses
    Fuses

    33019 Products showing for Fuses & Circuit Breakers

    1 of 999+
    TE Connectivity Thermal Circuit Breaker - W23 Single Pole 50 V dc, 250V ac Voltage Rating, 15A Current Rating
    • RS Stock No. 782-0860
    • Mfr. Part No. W23-X1A1G-15
    Each
    $78.67
    Phoenix Contact Busbar
    • RS Stock No. 290-1258
    • Mfr. Part No. 0402174
    Each
    $50.60
    Better World
    Schneider Electric Linergy Terminal Block for use with GV1G
    • RS Stock No. 400-1984
    • Mfr. Part No. GV1G09
    Each
    $75.88
    Better World
    Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
    • RS Stock No. 806-7228
    • Mfr. Part No. A9XPH112
    Each
    $44.36
    Littelfuse 1.1A Resettable Fuse, 72V
    • RS Stock No. 517-6685
    • Mfr. Part No. RXEF110
    Each (In a Pack of 10)
    $0.75
    Clipsal Electrical RCBO, 10A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type A, MAX9 Range
    • RS Stock No. 282-2969
    • Mfr. Part No. MX9R3110
    Each
    $53.82
    TE Connectivity Thermal Circuit Breaker - W23 Single Pole 50 V dc, 250V ac Voltage Rating, 20A Current Rating
    • RS Stock No. 782-0864
    • Mfr. Part No. W23-X1A1G-20
    Each
    $53.08
    SIBA 100A NH Fuse, NH000, 500V ac
    • RS Stock No. 421-722
    • Mfr. Part No. 20-000-13/100E1
    Each (In a Pack of 3)
    $19.59
    Electro PJP AdaBV140 Adapter for use with Screw Terminal Block
    • RS Stock No. 275-3341
    • Mfr. Part No. AdaBV140-N
    Each
    $9.94
    Phoenix Contact Electronic Device Circuit Breaker Electronic Circuit breaker 4A 24V CBMC, 1 channels , DIN Rail Mount
    • RS Stock No. 207-2718
    • Mfr. Part No. 2906031
    Each
    $219.33
    Eaton 200A British Standard Fuse, B2, 415V ac, 111mm
    • RS Stock No. 156-8715
    • Mfr. Part No. DD200M250
    Each
    $87.76
    Wickmann 200A Inline Fuse Holder, 32V dc
    • RS Stock No. 174-0633
    • Mfr. Part No. 04980921GXM5
    1 Pack of 1
    $13.38
    Eaton Door Coupling Handle for use with EN60204, NA Type Circuit Breaker
    • RS Stock No. 178-8044
    • Mfr. Part No. 106133 PKZ0-XRH
    Each
    $208.26
    TE Connectivity Thermal Circuit Breaker - W54 Single Pole 250V ac Voltage Rating, 15A Current Rating
    • RS Stock No. 782-7975
    • Mfr. Part No. W54-XB1A4A10-15
    Each
    $9.83
    ABB 200A Centred Tag Fuse, NH1, 500V
    • RS Stock No. 779-9996
    • Mfr. Part No. OFAF1H200 1SCA022627R4490
    Each
    $27.94
    SIBA 30A Ceramic Cartridge Fuse, 10 x 38mm
    • RS Stock No. 314-4844
    • Mfr. Part No. 50-179-06/30A
    Each (In a Pack of 5)
    $22.918
    TE Connectivity Thermal Circuit Breaker - W23 Single Pole 50 V dc, 250V ac Voltage Rating, 5A Current Rating
    • RS Stock No. 782-0886
    • Mfr. Part No. W23-X1A1G-5
    Each
    $58.83
    SIBA 25A Ceramic Cartridge Fuse, 14 x 51mm
    • RS Stock No. 247-4223
    • Mfr. Part No. 50-124-06/25A
    Each
    $22.55
    Schurter Thermal Circuit Breaker - T11 Single Pole 240V ac Voltage Rating, 4A Current Rating
    • RS Stock No. 284-5849
    • Mfr. Part No. 4400.0001
    Each
    $17.40
    Clipsal Electrical MAX9 MX9MC MCB, 3P, 10A, 415V AC, 6000 A Breaking Capacity
    • RS Stock No. 282-2949
    • Mfr. Part No. MX9MC310
    Each
    $44.44
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