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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

    44552 Products showing for Fuses & Circuit Breakers

    1 of 999+
    SIBA 1A T Ceramic Cartridge Fuse, 5 x 20mm
    • RS Stock No. 783-3292
    • Mfr. Part No. 70-007-65/1A
    Each (In a Pack of 10)
    HK$6.46
    Better World
    Siemens Sentron 5SY6 MCB, 1P, 3A Curve C, 230V AC, 72V DC, 6 kA Breaking Capacity
    • RS Stock No. 521-4945
    • Mfr. Part No. 5SY6103-7
    Each
    HK$152.00
    Eaton 1A F Ceramic Cartridge Fuse, 6.3 x 25mm
    • RS Stock No. 412-986
    • Mfr. Part No. TDC180-1A
    Each (In a Pack of 10)
    HK$11.63
    Eaton 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
    • RS Stock No. 171-6779
    • Mfr. Part No. S505H-V-3-15-R
    Each (In a Pack of 5)
    HK$7.18
    ETA Thermal Magnetic Circuit Breaker - 201 Single Pole, 1A Current Rating
    • RS Stock No. 333-237
    • Mfr. Part No. 201-1A
    Each
    HK$252.70
    Schurter Panel Mount Fuse Holder for 5 x 20mm Fuse, 2P
    • RS Stock No. 500-6211
    • Mfr. Part No. 4301.1401
    Each
    HK$39.20
    RS PRO 6A British Standard Fuse, F1, 550V ac
    • RS Stock No. 521-2905
    Each (In a Pack of 5)
    HK$38.706
    RS PRO 32A British Standard Fuse, F1, 550V ac
    • RS Stock No. 521-2955
    Each (In a Pack of 5)
    HK$55.834
    Eaton 500mA F Glass Cartridge Fuse, 5 x 20mm
    • RS Stock No. 848-3034
    • Mfr. Part No. GMA-500-R
    Each
    HK$5.90
    Better World
    Siemens Sentron 5SY4 MCB, 3P, 32A Curve D, 400V AC, 10 kA Breaking Capacity
    • RS Stock No. 772-1385
    • Mfr. Part No. 5SY4332-8
    Each
    HK$1,039.10
    Limitor Thermal Fuse +140°C 2.5 A, 250V ac
    • RS Stock No. 204-7483
    • Mfr. Part No. Q82 A 140 05 100
    Each
    HK$47.50
    Better World
    Siemens Sentron 5SY6 MCB, 1P, 1A Curve C, 230V AC, 72V DC, 6 kA Breaking Capacity
    • RS Stock No. 521-4917
    • Mfr. Part No. 5SY6101-7
    Each
    HK$225.00
    RS PRO 63A Rail Mount Fuse Holder for F2 Fuse, 415V ac
    • RS Stock No. 216-5351
    Each
    HK$154.10
    Eaton 40A Ceramic Cartridge Fuse, 14 x 51mm
    • RS Stock No. 181-8582
    • Mfr. Part No. C14M40
    Each (In a Box of 10)
    HK$16.94
    RS PRO 2.5A F Glass Cartridge Fuse, 5 x 20mm
    • RS Stock No. 563-435
    Each (In a Pack of 10)
    HK$3.215
    Eaton 20A Rail Mount Fuse Holder for A1 Fuse, 1P, 690V ac
    • RS Stock No. 182-1837
    • Mfr. Part No. RS20HGN
    Each
    HK$293.40
    Schurter 32A T Ceramic Cartridge Fuse, 6.3 x 32mm
    • RS Stock No. 144-1830
    • Mfr. Part No. 8020.5026.G
    Each (In a Bag of 10)
    HK$10.82
    ABB F401 RCCB, 32A, 2 Pole, 30mA, Type B, 240V ac
    • RS Stock No. 246-2367
    • Mfr. Part No. 2CCG001675R0001
    Each
    HK$1,867.45
    Schurter 5A T Ceramic Cartridge Fuse, 5 x 20mm
    • RS Stock No. 789-7801
    • Mfr. Part No. 0001.2511
    Each (In a Bag of 10)
    HK$4.24
    ETA Thermal Magnetic Circuit Breaker - 201 Single Pole, 5A Current Rating
    • RS Stock No. 333-265
    • Mfr. Part No. 201-5A
    Each
    HK$283.70
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