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.

51028 Products showing for Fuses & Circuit Breakers

629 of 999+
Better World
  • RS Stock No. 157-390
  • Mfr. Part No. 3VA2125-8HK46-0AA0
Each
£777.15
  • RS Stock No. 444-137
  • Mfr. Part No. NSYTBCN385
Each
£1,322.24
  • RS Stock No. 851-1630
  • Mfr. Part No. FRS-R-60
Each
£64.73
  • RS Stock No. 599-836
  • Mfr. Part No. CDF163F
Each
£372.51
  • RS Stock No. 560-354
  • Mfr. Part No. 0ZCJ0035AF2E
Each
£0.15
  • RS Stock No. 267-3420
  • Mfr. Part No. 70-010-04/6.3A
Each (In a Pack of 5)
£4.28
  • RS Stock No. 125-1443
  • Mfr. Part No. 1492-SPM3B130
Each
£58.37
  • RS Stock No. 230-243
  • Mfr. Part No. 107661 NZMB2-S63-BT-CNA
Each
£497.45
  • RS Stock No. 245-9232
  • Mfr. Part No. SF-1206F700M-2
Each (On a Tape of 10)
£0.492
  • RS Stock No. 238-3437
  • Mfr. Part No. A9PA4720
Each
£157.43
  • RS Stock No. 218-8772
  • Mfr. Part No. 1492-SPM1D160-N
Each
£40.91
  • RS Stock No. 260-8250
  • Mfr. Part No. C63V35E630
Each
£5,017.87
Better World
  • RS Stock No. 157-387
  • Mfr. Part No. 3VA2125-8HK36-0AA0
Each
£574.48
  • RS Stock No. 201-406
  • Mfr. Part No. 2CDS251001R0825
Each
£77.48
  • RS Stock No. 864-4336
  • Mfr. Part No. 242211 PLSM-C50-MW
Each
£22.61
  • RS Stock No. 203-697
  • Mfr. Part No. 2CDS242701R0104
Each
£28.79
Better World
  • RS Stock No. 243-6173
  • Mfr. Part No. 5SU1324-7FR10
Each
£312.04
  • RS Stock No. 261-461
  • Mfr. Part No. FN03C
1 Pack of 10
£692.91
  • RS Stock No. 246-2613
  • Mfr. Part No. 2CCS572001R1104
Each
£134.31
  • RS Stock No. 259-207
  • Mfr. Part No. 278908 FAZ-K8/3
Each
£147.11
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