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.

50958 Products showing for Fuses & Circuit Breakers

720 of 999+
  • RS Stock No. 602-104
  • Mfr. Part No. HMB299
Each
£466.52
Better World
  • RS Stock No. 248-3698
  • Mfr. Part No. A9R31491
Each
£765.39
  • RS Stock No. 200-6147
  • Mfr. Part No. A9PE4610
Each
£112.15
  • RS Stock No. 347-114
  • Mfr. Part No. C16N6TM125
Each
£1,497.84
  • RS Stock No. 229-657
  • Mfr. Part No. 110272 XBSB253-STS
Each
£173.47
Better World
  • RS Stock No. 238-3344
  • Mfr. Part No. A9DV6625
Each
£243.30
  • RS Stock No. 228-792
  • Mfr. Part No. CHPV142U
1 Pack of 3
£78.06
  • RS Stock No. 611-9302
Each (In a Pack of 10)
£0.211
  • RS Stock No. 895-1644P
  • Mfr. Part No. 37200500431
Each (Supplied in a Bag)
£1.165
  • RS Stock No. 260-7703
  • Mfr. Part No. C12N3TM125L
Each
£642.05
  • RS Stock No. 335-096
  • Mfr. Part No. BGF36060
Each
£365.45
  • RS Stock No. 254-451
  • Mfr. Part No. 259118 NZMH3-AE630
Each
£2,857.99
  • RS Stock No. 229-859
  • Mfr. Part No. 113244 NZMN2-A160-SVE
Each
£959.18
  • RS Stock No. 254-949
  • Mfr. Part No. 236719 PXL-C32/2-DC
Each
£162.41
  • RS Stock No. 210-6887
  • Mfr. Part No. 3NA3224-6
Each (In a Pack of 3)
£56.913
  • RS Stock No. 490-292
  • Mfr. Part No. 236404 PXL-B40/3
Each
£76.77
  • RS Stock No. 210-4730
  • Mfr. Part No. EUBLMC20B30A
Each
£57.18
Better World
  • RS Stock No. 209-6681
  • Mfr. Part No. 5SY6215-7
Each
£52.78
Better World
  • RS Stock No. 219-9241
  • Mfr. Part No. A9F92206
Each
£387.36
  • RS Stock No. 261-627
  • Mfr. Part No. 302447 KLV-60HWP-W-HY24-F
Each
£373.30
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