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.

50914 Products showing for Fuses & Circuit Breakers

2546 of 999+
  • RS Stock No. 162-025
  • Mfr. Part No. 3VA9053-0SB20
Each
£17.10(exc. VAT)
  • RS Stock No. 207-2801
  • Mfr. Part No. 2909636
Each
£95.94(exc. VAT)
  • RS Stock No. 552-266
  • Mfr. Part No. 0473003.MAT1L
1 Bag of 100
£74.44(exc. VAT)
Better World
  • RS Stock No. 270-4525
  • Mfr. Part No. 3VA2125-6HK32-0AA0
Each
£464.91(exc. VAT)
  • RS Stock No. 187-8665
  • Mfr. Part No. SF-3812F2000T-2
Each (On a Reel of 2500)
£1.451(exc. VAT)
  • RS Stock No. 357-790
  • Mfr. Part No. LV480890
Each
£479.23(exc. VAT)
Better World
  • RS Stock No. 270-3940
  • Mfr. Part No. 3VA2110-0MN32-0AA0
Each
£585.45(exc. VAT)
  • RS Stock No. 147-326
  • Mfr. Part No. 3VA5222-6ED61-0AA0
Each
£848.63(exc. VAT)
  • RS Stock No. 244-356
  • Mfr. Part No. 184665 XTPPN4CH
Each
£19.13(exc. VAT)
  • RS Stock No. 263-3756
  • Mfr. Part No. 3427010
Each (In a Pack of 10)
£14.977(exc. VAT)
  • RS Stock No. 251-3492
  • Mfr. Part No. 1SCA022627R7160
Each
£51.43(exc. VAT)
  • RS Stock No. 263-432
  • Mfr. Part No. 303742 IZM-DC-1
Each
£499.15(exc. VAT)
  • RS Stock No. 262-440
  • Mfr. Part No. 303689 IN63N4-63F-1
Each
£57,493.19(exc. VAT)
  • RS Stock No. 250-8630
  • Mfr. Part No. LF425M
Each (In a Pack of 10)
£4.155(exc. VAT)
  • RS Stock No. 202-7239
  • Mfr. Part No. 5SH4100
Each (In a Pack of 10)
£18.311(exc. VAT)
Better World
  • RS Stock No. 268-416
  • Mfr. Part No. 3VA6140-5HL41-0AA0
Each
£599.35(exc. VAT)
  • RS Stock No. 260-758
  • Mfr. Part No. 7.2TDLSJ31.5
1 Pack of 3
£458.67(exc. VAT)
  • RS Stock No. 253-650
  • Mfr. Part No. 266874 ZV-KSBI-9TE/N
1 Pack of 10
£61.22(exc. VAT)
  • RS Stock No. 825-5964
  • Mfr. Part No. P1MB4PC20
Each
£113.04(exc. VAT)
  • RS Stock No. 186-0324
  • Mfr. Part No. SF-3812F3500T-2
Each (On a Tape of 10)
£3.44(exc. VAT)