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.

50958 Products showing for Fuses & Circuit Breakers

724 of 999+
Better World
  • RS Stock No. 175-1505
  • Mfr. Part No. GV4P25N
Each
£542.41
  • RS Stock No. 258-9622
  • Mfr. Part No. 1SCA022724R0610
1 Box of 3
£83.20
  • RS Stock No. 131-458
  • Mfr. Part No. 2907891
Each
£601.64
Better World
  • RS Stock No. 211-2484
  • Mfr. Part No. A9F92110
Each
£93.56
  • RS Stock No. 213-0405
  • Mfr. Part No. 3RA2921-2GA00
Each
£14.65
  • RS Stock No. 245-9264P
  • Mfr. Part No. SF-1206SA450M-2
Each (Supplied on a Reel)
£0.671
  • RS Stock No. 225-6113
  • Mfr. Part No. 2CSF202101R4630 F202 A-63/0.5
Each
£186.40
  • RS Stock No. 257-040
  • Mfr. Part No. 279096 FAZ-K8/4
Each
£188.78
  • RS Stock No. 260-7739
  • Mfr. Part No. C16B3TM100
Each
£640.62
  • RS Stock No. 255-568
  • Mfr. Part No. 263280 PLN6-C10/1N-DE
Each
£78.15
  • RS Stock No. 225-6084
  • Mfr. Part No. 2CSB204101R4400 DDA204 A-40/0.5
Each
£125.17
  • RS Stock No. 608-803
  • Mfr. Part No. 3NE3234-0MK08
1 Pack of 3
£381.42
  • RS Stock No. 230-0924
  • Mfr. Part No. 177397 FAZ6-C0,16/1
Each
£24.55
  • RS Stock No. 260-7929
  • Mfr. Part No. C25L3
Each
£1,429.06
  • RS Stock No. 610-683
  • Mfr. Part No. 5SY8640-8
Each
£346.65
  • RS Stock No. 731-9869
  • Mfr. Part No. 4 107 08
Each
£277.08
  • RS Stock No. 261-2927
  • Mfr. Part No. 140G-K-TLA2A3
Each
£272.88
  • RS Stock No. 181-8928
  • Mfr. Part No. 200MJ30-7
Each
£45.80
  • RS Stock No. 260-9331
  • Mfr. Part No. C1032D040
Each
£330.17
  • RS Stock No. 347-092
  • Mfr. Part No. C125H320FM
Each
£4,948.58
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