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

144 of 999+
  • RS Stock No. 122-5263
  • Mfr. Part No. 60120004
Each (In a Pack of 10)
£0.869
  • RS Stock No. 181-8645
  • Mfr. Part No. 100MJ30-7
Each
£40.63
  • RS Stock No. 458-8740
  • Mfr. Part No. 1180-01-10A
Each
£11.29
  • RS Stock No. 691-7585
  • Mfr. Part No. MF-SM075/60-2
Each (In a Pack of 5)
£0.314
  • RS Stock No. 624-0428
  • Mfr. Part No. 278867 FAZ-C6/3
Each
£103.18
  • RS Stock No. 495-0741
  • Mfr. Part No. LVR033K
Each (In a Pack of 5)
£0.69
Better World
  • RS Stock No. 211-2361
  • Mfr. Part No. M9F22132
Each
£28.01
Better World
  • RS Stock No. 218-1803
  • Mfr. Part No. 3VA9153-0JA11
Each
£15.45
Better World
  • RS Stock No. 746-7854
  • Mfr. Part No. 2CDS252001R0061 S202-D6
Each
£47.25
  • RS Stock No. 226-0872
  • Mfr. Part No. 157.5701.5801
Each
£6.18
  • RS Stock No. 811-1892
  • Mfr. Part No. 1SL1202A00 65P12X12
Each
£35.24
  • RS Stock No. 304-2007
  • Mfr. Part No. Y300056
Each
£96.61
  • RS Stock No. 599-838
  • Mfr. Part No. CDF747F
Each
£124.77
  • RS Stock No. 230-1065
  • Mfr. Part No. 109274 PFGCM-40/2/003-A
Each
£58.76
  • RS Stock No. 777-7514
  • Mfr. Part No. 7010.9790.63
Each
£0.97
  • RS Stock No. 622-1174
  • Mfr. Part No. 5SH4163
Each (In a Pack of 10)
£2.156
Better World
  • RS Stock No. 214-2066
  • Mfr. Part No. M9F11216
Each
£77.21
  • RS Stock No. 244-933
  • Mfr. Part No. SE125A8
Each
£131.68
  • RS Stock No. 414-689
  • Mfr. Part No. TIA32M63
Each (In a Pack of 5)
£12.586
  • RS Stock No. 188-6631
  • Mfr. Part No. M084007
Each (In a Pack of 10)
£3.073
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