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

580 of 999+
  • RS Stock No. 240-8952
  • Mfr. Part No. 3-1393247-2
Each (In a Tray of 25)
£46.771
  • RS Stock No. 244-975
  • Mfr. Part No. SE72B250
Each
£1,067.67
  • RS Stock No. 848-3034
  • Mfr. Part No. GMA-500-R
Each
£0.70
  • RS Stock No. 231-9897
  • Mfr. Part No. 2CSF202001R0160 F202 AC-16/0.01
Each
£149.79
Better World
  • RS Stock No. 211-9616
  • Mfr. Part No. 5SV1316-6GV10
Each (In a Pack of 12)
£96.808
Better World
  • RS Stock No. 219-9256
  • Mfr. Part No. A9F93240
Each
£224.84
  • RS Stock No. 136-0620
  • Mfr. Part No. X227881 / NH0AM69V100
Each
£14.36
  • RS Stock No. 214-755
  • Mfr. Part No. QO110C10RCBO30F
Each
£359.03
  • RS Stock No. 287-9636
  • Mfr. Part No. 1250A-3S-400
Each
£401.73
Better World
  • RS Stock No. 245-539
  • Mfr. Part No. 3VA6140-8KQ41-2AA0
Each
£1,863.97
Better World
  • RS Stock No. 874-4174
  • Mfr. Part No. 3VA1112-3EE36-0AA0
Each
£549.20
Better World
  • RS Stock No. 268-611
  • Mfr. Part No. 3VA6115-6KL41-0AA0
Each
£1,810.95
  • RS Stock No. 212-359
  • Mfr. Part No. C2547A250
Each
£2,492.38
Better World
  • RS Stock No. 238-3415
  • Mfr. Part No. A9P71625
Each
£29.81
  • RS Stock No. 276-5360
  • Mfr. Part No. Mi 1112
Each
£179.75
  • RS Stock No. 247-1861
  • Mfr. Part No. 33714
Each
£709.34
Better World
  • RS Stock No. 209-6758
  • Mfr. Part No. 3VA1112-5EF32-0AA0
Each
£672.01
  • RS Stock No. 337-4916
  • Mfr. Part No. 0KLK010.T
Each (In a Pack of 5)
£29.75
  • RS Stock No. 346-787
  • Mfr. Part No. A9F93120
Each
£153.25
  • RS Stock No. 275-0166
  • Mfr. Part No. AP12-1-42-102
Each
£614.00
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