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

2547 of 999+
  • RS Stock No. 577-278
  • Mfr. Part No. 4435.0196
Each
£6.39
  • RS Stock No. 610-362
  • Mfr. Part No. 5SY8508-8
Each
£95.00
  • RS Stock No. 509-828
  • Mfr. Part No. 1199369
Each
£164.14
  • RS Stock No. 250-203
  • Mfr. Part No. 3VA6580-6JP36-0AA0
Each
£4,073.39
  • RS Stock No. 664-370
  • Mfr. Part No. 5SY8110-8
Each
£42.00
  • RS Stock No. 255-712
  • Mfr. Part No. 259489 NZM1-XUL220-250DC
Each
£116.50
  • RS Stock No. 602-193
  • Mfr. Part No. BFC843
Each
£244.63
  • RS Stock No. 253-638
  • Mfr. Part No. 266196 NZM4-XU600AC
Each
£205.78
  • RS Stock No. 608-365
  • Mfr. Part No. 3NB1236-1KK15
1 Pack of 3
£611.03
  • RS Stock No. 630-862
  • Mfr. Part No. D090531Q
1 Box of 10
£10.66
  • RS Stock No. 630-905
  • Mfr. Part No. Y085374Q
1 Box of 10
£12.27
  • RS Stock No. 654-662
  • Mfr. Part No. R9R22240
Each
£87.08
  • RS Stock No. 654-187
  • Mfr. Part No. IL0161P253
Each
£145.61
  • RS Stock No. 654-653
  • Mfr. Part No. R9F23320
Each
£68.58
  • RS Stock No. 654-659
  • Mfr. Part No. R9F24325
Each
£102.50
  • RS Stock No. 249-588
  • Mfr. Part No. 3VA6560-7HL36-0AA0
Each
£2,777.66
  • RS Stock No. 599-885
  • Mfr. Part No. BDH280E
Each
£790.47
  • RS Stock No. 610-617
  • Mfr. Part No. 5SY8405-8
Each
£269.99
  • RS Stock No. 610-661
  • Mfr. Part No. 5SY8410-7
Each
£195.83
  • RS Stock No. 602-086
  • Mfr. Part No. ARC706F
Each
£206.35