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.

50914 Products showing for Fuses & Circuit Breakers

392 of 999+
  • RS Stock No. 221-3654
Each (In a Pack of 5)
£11.832(exc. VAT)
  • RS Stock No. 435-526
  • Mfr. Part No. 2CCG001217R0001
Each
£198.11(exc. VAT)
Better World
  • RS Stock No. 219-8300
  • Mfr. Part No. A9N18511
Each
£299.84(exc. VAT)
  • RS Stock No. 259-3626
  • Mfr. Part No. 1SDA071602R1
Each
£6,469.77(exc. VAT)
  • RS Stock No. 738-2794
  • Mfr. Part No. 021801.6MXP
Each (In a Pack of 10)
£0.306(exc. VAT)
Better World
  • RS Stock No. 157-279
  • Mfr. Part No. 3VA2125-5MQ36-0AA0
Each
£893.89(exc. VAT)
  • RS Stock No. 259-4499
  • Mfr. Part No. 1SDA072721R1
Each
£3,004.12(exc. VAT)
Better World
  • RS Stock No. 156-758
  • Mfr. Part No. 3VA2450-7MS32-0AA0
Each
£1,894.09(exc. VAT)
Better World
  • RS Stock No. 157-166
  • Mfr. Part No. 3VA2216-7MN32-0AA0
Each
£819.78(exc. VAT)
  • RS Stock No. 825-5772
  • Mfr. Part No. P1MB2PD50
Each
£48.40(exc. VAT)
  • RS Stock No. 260-8127
  • Mfr. Part No. C40N34V400
Each
£5,190.04(exc. VAT)
  • RS Stock No. 230-379
  • Mfr. Part No. 113333 NZMH2-A125-SVE
Each
£1,017.86(exc. VAT)
  • RS Stock No. 262-308
  • Mfr. Part No. 303690 IN63H4-50F-1
Each
£48,533.16(exc. VAT)
  • RS Stock No. 627-168
  • Mfr. Part No. 3NW6103-1
1 Pack of 10
£29.70(exc. VAT)
  • RS Stock No. 218-8892
  • Mfr. Part No. 1492-SPM3D400-N
Each
£101.76(exc. VAT)
  • RS Stock No. 341-375
  • Mfr. Part No. C063H35AFM
Each
£3,772.74(exc. VAT)
Better World
  • RS Stock No. 211-0355
  • Mfr. Part No. KBA25ED4305TW
Each (In a Pack of 6)
£228.513(exc. VAT)
  • RS Stock No. 259-162
  • Mfr. Part No. 283894 XDSFN
Each
£29.08(exc. VAT)
Better World
  • RS Stock No. 791-3528
  • Mfr. Part No. A9F55225
Each
£78.85(exc. VAT)
  • RS Stock No. 357-070
  • Mfr. Part No. BGF46040
Each
£499.09(exc. VAT)
Results per page