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.

50957 Products showing for Fuses & Circuit Breakers

118 of 999+
  • RS Stock No. 337-7915
  • Mfr. Part No. 155.0892.5501
Each
£8.19
  • RS Stock No. 129-481
  • Mfr. Part No. 1207190
Each
£7.08
  • RS Stock No. 182-4004
Each (In a Pack of 5)
£7.38
Better World
  • RS Stock No. 790-9181
  • Mfr. Part No. A9E18033
Each
£20.89
Better World
  • RS Stock No. 514-0210
  • Mfr. Part No. 2CDS253001R0427 S203-K10
Each
£89.30
Better World
  • RS Stock No. 202-7092
  • Mfr. Part No. 5SL4102-6
Each
£21.26
  • RS Stock No. 773-3561
  • Mfr. Part No. LPJ-100SP
Each
£146.66
  • RS Stock No. 563-665
Each (In a Pack of 10)
£0.278
  • RS Stock No. 610-9721
Each (In a Pack of 10)
£0.34
  • RS Stock No. 396-128
  • Mfr. Part No. 3NA3130
Each (In a Pack of 3)
£10.18
  • RS Stock No. 535-4251
  • Mfr. Part No. 2CDS273001R0064 S203M-C6
Each
£84.56
  • RS Stock No. 703-8504
  • Mfr. Part No. C10M12
Each (In a Pack of 10)
£1.185
  • RS Stock No. 228-599
  • Mfr. Part No. C14M32 CYLINDRICAL FUSE 14 x 51 32A AM 500V AC
1 Pack of 10
£15.37
  • RS Stock No. 125-1523
  • Mfr. Part No. 1492-SPM3D060
Each
£62.52
  • RS Stock No. 207-2804
  • Mfr. Part No. 2909904
Each
£45.47
  • RS Stock No. 265-0184
Each
£19.99
  • RS Stock No. 848-3030
  • Mfr. Part No. BK-GMA-4-R
Each
£0.40
  • RS Stock No. 230-1095
  • Mfr. Part No. 264690 PLG6-C2/1N
Each
£15.37
  • RS Stock No. 521-5061
  • Mfr. Part No. 5ST3748
Each
£1.20
Better World
  • RS Stock No. 527-9419
  • Mfr. Part No. 2CDS251001R0011 S201-D1
Each
£17.94
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