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

194 of 999+
  • RS Stock No. 153-3459
  • Mfr. Part No. EUBLMC16C30A
Each
£57.18(exc. VAT)
Better World
  • RS Stock No. 222-3856
  • Mfr. Part No. NSYECB1M153
Each
£98.68(exc. VAT)
Better World
  • RS Stock No. 850-8644
  • Mfr. Part No. EZ9D16810
Each
£28.84(exc. VAT)
Better World
  • RS Stock No. 191-6096
  • Mfr. Part No. A9P22716
Each
£148.63(exc. VAT)
Better World
  • RS Stock No. 132-116
  • Mfr. Part No. 2CDS272001R0204 S202M-C20
Each
£52.80(exc. VAT)
  • RS Stock No. 284-2373
Each
£77.88(exc. VAT)
Better World
  • RS Stock No. 189-3191
  • Mfr. Part No. 5SL6116-7
Each
£15.42(exc. VAT)
  • RS Stock No. 101-736
Each
£91.96(exc. VAT)
  • RS Stock No. 277-8523
Each
£12.00(exc. VAT)
  • RS Stock No. 201-298
  • Mfr. Part No. 2CDS381001R0467
Each
£33.49(exc. VAT)
  • RS Stock No. 418-530
  • Mfr. Part No. TCP80
Each
£31.66(exc. VAT)
  • RS Stock No. 184-9021
  • Mfr. Part No. CPB06
Each
£3.28(exc. VAT)
  • RS Stock No. 624-0399
  • Mfr. Part No. 278876 FAZ-C32/3
Each
£95.22(exc. VAT)
Better World
  • RS Stock No. 209-6881
  • Mfr. Part No. 3VA1225-4EF32-0AA0
Each
£635.60(exc. VAT)
  • RS Stock No. 299-100
  • Mfr. Part No. SE2-50
Each (In a Box of 10)
£8.333(exc. VAT)
Better World
  • RS Stock No. 790-9351
  • Mfr. Part No. A9D12832
Each
£163.80(exc. VAT)
  • RS Stock No. 285-5830
  • Mfr. Part No. 4000-71001-1630006
Each
£11.25(exc. VAT)
  • RS Stock No. 397-474
  • Mfr. Part No. 3NA3136
Each (In a Pack of 3)
£10.18(exc. VAT)
Better World
  • RS Stock No. 212-8941
  • Mfr. Part No. 5SL6506-7
Each
£47.92(exc. VAT)
  • RS Stock No. 252-2145
Each (In a Pack of 50)
£0.173(exc. VAT)
Results per page