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.

51057 Products showing for Fuses & Circuit Breakers

620 of 999+
  • RS Stock No. 147-306
  • Mfr. Part No. 3VA5220-7EC61-0AA0
Each
£848.63
  • RS Stock No. 885-6680
  • Mfr. Part No. 3062784
Each (In a Box of 10)
£11.612
  • RS Stock No. 847-3453
  • Mfr. Part No. 102099 FAZ-D1,5/1-NA
Each
£37.76
  • RS Stock No. 288-7088
  • Mfr. Part No. A9F93320
Each
£221.78
  • RS Stock No. 230-0952
  • Mfr. Part No. 239171 FAZ6-C10/3N
Each
£39.67
  • RS Stock No. 266-475
  • Mfr. Part No. 8UC7172-8BD22
Each
£87.01
Better World
  • RS Stock No. 268-395
  • Mfr. Part No. 3VA6115-7KP31-2AA0
Each
£1,848.84
Better World
  • RS Stock No. 212-1639
  • Mfr. Part No. 2CDS253280R0044
Each
£63.00
  • RS Stock No. 226-0872
  • Mfr. Part No. 157.5701.5801
Each
£6.18
  • RS Stock No. 127-693
  • Mfr. Part No. 183329 IZMX16B3-V12F-1
Each
£4,393.85
  • RS Stock No. 201-4753
  • Mfr. Part No. 2908194
Each
£123.01
  • RS Stock No. 257-671
  • Mfr. Part No. 3VA5460-6GF41-0AA0
Each
£2,568.65
  • RS Stock No. 203-2149
  • Mfr. Part No. 3NA6236
Each (In a Pack of 3)
£21.847
  • RS Stock No. 181-8921
  • Mfr. Part No. 35NZ02
Each
£3.22
  • RS Stock No. 219-3609
  • Mfr. Part No. 0299070.TXN
Each (In a Pack of 10)
£3.032
  • RS Stock No. 764-9542
Each (In a Pack of 10)
£0.34
Better World
  • RS Stock No. 225-8783
  • Mfr. Part No. 5SU1654-7KK16
Each
£135.55
  • RS Stock No. 597-890
  • Mfr. Part No. BC226
Each
£347.43
  • RS Stock No. 237-5050
  • Mfr. Part No. 2CSR252101R1137
Each
£336.98
  • RS Stock No. 232-2041
  • Mfr. Part No. 3NW3300-0HG
Each (In a Pack of 10)
£22.452
Results per page