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.

50957 Products showing for Fuses & Circuit Breakers

707 of 999+
Better World
  • RS Stock No. 212-0153
  • Mfr. Part No. DF2HN1251
Each (In a Pack of 3)
£98.443
  • RS Stock No. 341-148
  • Mfr. Part No. BJF46040
Each
£1,307.14
  • RS Stock No. 200-016
  • Mfr. Part No. 2CDS271001R0537
Each
£33.60
  • RS Stock No. 221-5663
  • Mfr. Part No. 8040.2002.01
Each (In a Pack of 5)
£0.414
  • RS Stock No. 229-064
  • Mfr. Part No. 10H07-660
1 Pack of 20
£682.70
  • RS Stock No. 375-9480
  • Mfr. Part No. M222513
Each (In a Pack of 5)
£2.298
  • RS Stock No. 563-728A
Each (In a Pack of 100)
£0.219
  • RS Stock No. 201-336
  • Mfr. Part No. 2CDS383001R0258
Each
£175.78
Better World
  • RS Stock No. 221-0885
  • Mfr. Part No. A9N18435
Each
£418.01
Better World
  • RS Stock No. 268-662
  • Mfr. Part No. 3VA6110-7HN41-2AA0
Each
£947.15
Better World
  • RS Stock No. 211-9638
  • Mfr. Part No. 5SV3342-3
Each
£233.03
  • RS Stock No. 733-4870
  • Mfr. Part No. 3404.0115.22
Each (In a Bag of 5)
£0.612
  • RS Stock No. 173-8126
  • Mfr. Part No. 3404.2419.22
1 Reel of 1000
£895.77
  • RS Stock No. 703-2760
  • Mfr. Part No. 3404.2421.22
Each (In a Bag of 10)
£1.074
  • RS Stock No. 712-4756P
  • Mfr. Part No. 0090.0004
Each (Supplied in a Bag)
£17.27
  • RS Stock No. 703-2666P
  • Mfr. Part No. 8020.0603.G
Each (Supplied in a Box)
£0.961
  • RS Stock No. 541-3007
  • Mfr. Part No. 0313001.MXP
Each (In a Pack of 10)
£0.793
  • RS Stock No. 221-5594
  • Mfr. Part No. 3-128-208
1 Box of 50
£355.86
  • RS Stock No. 239-838
  • Mfr. Part No. 191661 NZMS2-4-VX160/VAR
Each
£1,477.04
Better World
  • RS Stock No. 219-8859
  • Mfr. Part No. KBB25ED42305W
Each
£176.99
Results per page