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

676 of 999+
  • RS Stock No. 654-735
  • Mfr. Part No. A9DF3616
Each
£277.71
  • RS Stock No. 201-031
  • Mfr. Part No. 2CDS272337R0084
Each
£104.14
  • RS Stock No. 825-5510
  • Mfr. Part No. P1MB1NC10
Each
£44.85
Better World
  • RS Stock No. 209-6633
  • Mfr. Part No. 5SL4320-7
Each
£81.11
Better World
  • RS Stock No. 211-9659
  • Mfr. Part No. 5SV3412-6KL
Each
£142.30
  • RS Stock No. 210-2131
  • Mfr. Part No. ESX10-TB-101-DC24V-1A-E
Each
£82.11
  • RS Stock No. 703-2691
  • Mfr. Part No. 3403.0173.24
Each (In a Bag of 10)
£0.573
  • RS Stock No. 258-914
  • Mfr. Part No. 288915 Z-D02/PE-35
1 Pack of 12
£2.63
  • RS Stock No. 258-786
  • Mfr. Part No. 271065 Z-GV-16/3P+HS
Each
£49.74
  • RS Stock No. 250-4210
  • Mfr. Part No. 1SDA054505R1
Each
£2,372.43
  • RS Stock No. 247-2696
  • Mfr. Part No. B216661
1 Box of 10
£61.99
  • RS Stock No. 182-4193
Each (In a Pack of 20)
£0.258
  • RS Stock No. 117-198
  • Mfr. Part No. FP VN 0810 GB
Each
£789.00
  • RS Stock No. 176-879
  • Mfr. Part No. 2CCF544310E0630 - F404A-K63/0.03,2CC
Each
£326.98
  • RS Stock No. 125-826
  • Mfr. Part No. 176075 FAZ-B2/2-DC
Each
£132.53
  • RS Stock No. 230-632
  • Mfr. Part No. 116882 Z-GV-16/PKPX/4PHAS
Each
£49.74
Better World
  • RS Stock No. 211-2509
  • Mfr. Part No. A9F95306
Each
£293.92
  • RS Stock No. 703-2776P
  • Mfr. Part No. 3413.0327.22
Each (Supplied on a Reel)
£0.454
Better World
  • RS Stock No. 188-4745
  • Mfr. Part No. GV3P731
Each
£334.91
  • RS Stock No. 409-839
  • Mfr. Part No. 1410-F110-P1F1-W14QB4-5A
Each
£20.09
Results per page