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

46578 Products showing for Fuses & Circuit Breakers

145 / 999+
ABB S800C MCB, 2P, 32A Curve C, 240V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-941
  • Mfr. Part No. 2CCS882001R0324
Each
MYR523.58
Better World
Schneider Electric Acti 9 C120H MCB, 4P, 80A Curve C, 440V AC, 500V DC, 15 kA, 30 kA Breaking Capacity
  • RS Stock No. 776-3039
  • Mfr. Part No. A9N18479
Each
MYR2,854.45
Lovato ModuLo P1MB MCB, 2P, 6A Curve C, 230V AC, 80V DC, 10 kA Breaking Capacity
  • RS Stock No. 825-5712
  • Mfr. Part No. P1MB2PC06
Each
MYR275.90
Better World
ABB System Pro M Compact S200 MCB, 2P, 16A Curve K, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7996
  • Mfr. Part No. 2CDS252001R0467 S202-K16
Each
MYR481.83
Eaton MEMShield MCB, 1P, 32A Curve C, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 124-3037
  • Mfr. Part No. EMCH132 EMCH132
Each
MYR153.38
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 16A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3382
  • Mfr. Part No. A9F54316
Each
MYR835.19
Better World
Siemens Sentron 5SY6 MCB, 2P, 6A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 196-3628
  • Mfr. Part No. 5SY6206-7
Each
MYR353.89
RS PRO 160A Bolted Tag Fuse, 350 V dc, 690V ac, 70mm
  • RS Stock No. 221-3670
Each
MYR170.42
ABB System Pro M Compact S200M MCB, 2P, 20A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-151
  • Mfr. Part No. 2CDS272001R0487
Each
MYR1,427.62
Schneider Electric, ComPacT MCCB 4P 800A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 341-271
  • Mfr. Part No. C080H45AFM
Each
MYR68,627.10
Siemens 50A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1124
  • Mfr. Part No. 5SE2350
Each (In a Pack of 10)
MYR14.86
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 25A Curve C, 240V AC
  • RS Stock No. 256-6759
  • Mfr. Part No. M9F22225
Each
MYR628.64
Eaton 250mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 849-6018
  • Mfr. Part No. GDA-250MA
Each (In a Pack of 5)
MYR29.73
Legrand 20A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 266-3106
  • Mfr. Part No. 0 134 20
1 Box of 10
MYR286.20
Schurter 630mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-8020
  • Mfr. Part No. 0034.3115
Each (In a Pack of 10)
MYR2.083
Schurter 16A Panel Mount Fuse Holder for 6.3 x 32, 5 x 20mm Fuse, 1P, 500V ac
  • RS Stock No. 866-3595
  • Mfr. Part No. 0031.2320
Each
MYR63.91
Hager MJT MCB, 2P, 10A Curve C, 240 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4949
  • Mfr. Part No. MJT710
Each
MYR158.38
Contactum 14 Way Steel Consumer Unit, 100A Defender
  • RS Stock No. 184-9129
  • Mfr. Part No. DDS14188MS-P01
Each
MYR1,293.45
RS PRO 20A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-4656
Each
MYR51.54
Better World
Schneider Electric iID RCCB, 63A, 4 Pole, 300mA, Type B-SI, 400V ac
  • RS Stock No. 248-3725
  • Mfr. Part No. A9Z64463
Each
MYR11,662.99
1
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