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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

    47005 Products showing for Fuses & Circuit Breakers

    1 of 999+
    Littelfuse 1A M Glass Cartridge Fuse, 5 x 20mm
    • RS Stock No. 769-0023
    • Mfr. Part No. 0234001.MXP
    Each (In a Pack of 25)
    SGD0.903
    Littelfuse 4A F Glass Cartridge Fuse, 5 x 20mm
    • RS Stock No. 541-3748
    • Mfr. Part No. 0217004.MXP
    Each (In a Pack of 10)
    SGD0.448
    Socomec 6A Ceramic Cartridge Fuse, 14 x 51mm
    • RS Stock No. 179-9658
    • Mfr. Part No. 60520006
    Each (In a Box of 10)
    SGD14.754
    Better World
    Schneider Electric RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Resi9 Range
    • RS Stock No. 247-2231
    • Mfr. Part No. R9D01616
    Each
    SGD65.96
    ABB System Pro M Compact S200M MCB, 3P, 50A Curve D, 400V AC, 15 kA Breaking Capacity
    • RS Stock No. 746-8197
    • Mfr. Part No. 2CDS273001R0501 S203M-D50
    Each
    SGD139.71
    Eaton 100A British Standard Fuse, A3, 660V ac, 73mm
    • RS Stock No. 414-702
    • Mfr. Part No. TIS63M100
    Each
    SGD42.84
    Eaton 30A F Melamine Cartridge Fuse, 10 x 38mm
    • RS Stock No. 848-4273
    • Mfr. Part No. KTK-R-30
    Each
    SGD51.59
    Eaton 32A British Standard Fuse, A2, 660V ac, 73mm
    • RS Stock No. 414-673
    • Mfr. Part No. TIA32M50
    Each (In a Pack of 5)
    SGD21.412
    Eaton PC Board Non Resettable Fuse, Radial 2A, 250V ac
    • RS Stock No. 852-7196
    • Mfr. Part No. PCC-2-R
    Each
    SGD11.98
    ABB RCCB, 63A, 4 Pole, 100mA, Type A
    • RS Stock No. 246-2245
    • Mfr. Part No. 2CCF544220E0630 F404A-S63/0.1
    Each
    SGD505.56
    RS PRO 4A F Glass Cartridge Fuse, 5 x 20mm
    • RS Stock No. 668-5972
    Each (In a Pack of 10)
    SGD0.50
    Siemens 4A F Cartridge Fuse, 10 x 38mm
    • RS Stock No. 203-2041
    • Mfr. Part No. 3NW6004-1
    Each (In a Pack of 10)
    SGD6.537
    Littelfuse 15A F Glass Cartridge Fuse, 5 x 20mm
    • RS Stock No. 725-8054
    • Mfr. Part No. 0217015.MXP
    Each (In a Bag of 10)
    SGD0.465
    Schneider Electric Acti9 A9K MCB, 1P, 6A Curve B, 440V AC, 6000 A Breaking Capacity
    • RS Stock No. 140-024
    • Mfr. Part No. A9K01106
    Each
    SGD5.15
    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
    SGD56.57
    Wickmann 35A Green Blade Car Fuse, 32V dc
    • RS Stock No. 174-0720
    • Mfr. Part No. 0287035.PXCN
    Each (In a Pack of 50)
    SGD0.351
    Eaton xEffect MCB, 1P, 10A Curve S, 230V AC, 10 kA Breaking Capacity
    • RS Stock No. 532-5067
    • Mfr. Part No. 278611 FAZ-S10/1
    Each
    SGD42.66
    Better World
    Schneider Electric Acti 9 iC60N MCB, 2P, 10A Curve C, 400V AC, 12 → 144V DC, 6 kA Breaking Capacity
    • RS Stock No. 734-9068
    • Mfr. Part No. A9F77210
    Each
    SGD154.06
    TE Connectivity Thermal Circuit Breaker - W23 Single Pole 50 V dc, 250V ac Voltage Rating, 25A Current Rating
    • RS Stock No. 782-0873
    • Mfr. Part No. W23-X1A1G-25
    Each
    SGD49.89
    RS PRO 30A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
    • RS Stock No. 188-4619
    Each
    SGD21.67
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