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.

50973 Products showing for Fuses & Circuit Breakers

75 of 999+
  • RS Stock No. 228-597
  • Mfr. Part No. C14M12 CYLINDRICAL FUSE 14 x 51 12A AM 690V AC
1 Pack of 10
£14.34
  • RS Stock No. 188-6849
  • Mfr. Part No. A084318
Each (In a Pack of 10)
£3.727
  • RS Stock No. 210-4732
  • Mfr. Part No. EUBLMC32B30A
Each
£47.34
  • RS Stock No. 246-5128
  • Mfr. Part No. 3RV1915-1AB
Each
£8.82
  • RS Stock No. 412-560A
  • Mfr. Part No. TDC180-3A
Each (In a Pack of 100)
£0.233
  • RS Stock No. 866-3595
  • Mfr. Part No. 0031.2320
Each
£10.89
  • RS Stock No. 415-957
  • Mfr. Part No. 2211003
Each (In a Pack of 5)
£0.758
  • RS Stock No. 738-2823P
  • Mfr. Part No. 0326020.MXP
Each (Supplied in a Box)
£1.04
  • RS Stock No. 218-1858
  • Mfr. Part No. 3VA9467-0FK21
Each
£135.80
Better World
  • RS Stock No. 746-8163
  • Mfr. Part No. 2CDS272001R0101 S202M-D10
Each
£46.23
  • RS Stock No. 122-9303
  • Mfr. Part No. 3400-P10-H-SI-10A
Each
£45.84
  • RS Stock No. 914-4323
  • Mfr. Part No. ATDR2
Each
£22.10
  • RS Stock No. 359-5911
  • Mfr. Part No. FX0455
Each (In a Pack of 5)
£7.398
  • RS Stock No. 490-315
  • Mfr. Part No. 236429 PXL-C32/3
Each
£43.45
  • RS Stock No. 475-1358
  • Mfr. Part No. 73551201
Each
£73.91
  • RS Stock No. 252-2169
Each (In a Pack of 50)
£0.098
  • RS Stock No. 779-9978
  • Mfr. Part No. OFAF000H100 1SCA022627R1550
Each
£5.34
Better World
  • RS Stock No. 219-8269
  • Mfr. Part No. A9E18032
Each
£17.46
Better World
  • RS Stock No. 243-6205
  • Mfr. Part No. 5SU1336-6FP16
Each
£261.03
Better World
  • RS Stock No. 214-2071
  • Mfr. Part No. M9F11316
Each
£111.09
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