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

586 of 999+
  • RS Stock No. 242-1134
Each (In a Pack of 5)
£3.708
  • RS Stock No. 248-5678
  • Mfr. Part No. SM1X1311M
Each
£21.42
  • RS Stock No. 231-449
  • Mfr. Part No. 107647 NZMN2-AF175-BT-NA
Each
£1,214.29
  • RS Stock No. 893-8506
  • Mfr. Part No. 50-140-06/20A
Each
£20.24
  • RS Stock No. 275-0063
  • Mfr. Part No. 209-3-1-63-4-2-60-H-V
Each
£259.58
Better World
  • RS Stock No. 211-5969
  • Mfr. Part No. 3VA1050-4ED32-0AA0
Each
£172.17
  • RS Stock No. 565-366
  • Mfr. Part No. 09130550Z
Each
£0.36
  • RS Stock No. 260-9434
  • Mfr. Part No. C10F3TM063
Each
£473.31
Better World
  • RS Stock No. 213-1117
  • Mfr. Part No. 5SY8340-7
Each
£145.36
  • RS Stock No. 261-723
  • Mfr. Part No. FNQ-R-3
1 Pack of 10
£408.89
  • RS Stock No. 229-110
  • Mfr. Part No. C14G4S
1 Pack of 10
£57.58
  • RS Stock No. 127-425
  • Mfr. Part No. 180607 FRCMM-40/2/003-A-110
Each
£117.99
  • RS Stock No. 211-0182
  • Mfr. Part No. 5SD7414-2
Each
£639.72
  • RS Stock No. 232-0187
  • Mfr. Part No. 1SDA066446R1 AUX-C 1Q+1SY 24VDC XT1...4
Each
£56.87
  • RS Stock No. 257-049
  • Mfr. Part No. 279119 FAZ-Z40/4
Each
£215.99
  • RS Stock No. 262-316
  • Mfr. Part No. 6NHM000B-690
1 Pack of 3
£19.06
  • RS Stock No. 922-7046
  • Mfr. Part No. 278582 FAZ-D13/1
Each
£23.96
  • RS Stock No. 251-5281
  • Mfr. Part No. SPD-10-275-G2
Each
£11.69
  • RS Stock No. 732-0008
  • Mfr. Part No. 4 112 08
Each
£487.05
  • RS Stock No. 247-1855
  • Mfr. Part No. 33646
Each
£52.07
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