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

87 of 999+
  • RS Stock No. 210-4756
  • Mfr. Part No. EUR163.30/2A
Each
£13.43
  • RS Stock No. 890-3742
  • Mfr. Part No. 2905340
Each
£288.19
  • RS Stock No. 125-1468
  • Mfr. Part No. 1492-SPM2C020
Each
£44.09
Better World
  • RS Stock No. 772-1284
  • Mfr. Part No. 5SY4204-8
Each
£64.03
  • RS Stock No. 156-8822
  • Mfr. Part No. 50LET
Each
£11.30
  • RS Stock No. 229-178
  • Mfr. Part No. C10G32 CYLINDRICAL FUSE 10 x 38 32A GG 400V AC
1 Pack of 10
£6.85
  • RS Stock No. 276-8808
  • Mfr. Part No. LVS04202
Each
£71.00
Better World
  • RS Stock No. 806-7304
  • Mfr. Part No. SEA9TB1254
Each
£48.85
  • RS Stock No. 232-0026
  • Mfr. Part No. GJI2320131R0001 SZ-KLB 8
1 Box of 1
£7.68
  • RS Stock No. 272-7477
  • Mfr. Part No. LV432598T
Each
£194.47
  • RS Stock No. 125-1506
  • Mfr. Part No. 1492-SPM2D010
Each
£47.87
  • RS Stock No. 624-0333
  • Mfr. Part No. 278557 FAZ-C10/1
Each
£22.85
  • RS Stock No. 181-8505
  • Mfr. Part No. CEO32
Each (In a Box of 10)
£10.252
Better World
  • RS Stock No. 188-4740
  • Mfr. Part No. GV3P80
Each
£405.56
Better World
  • RS Stock No. 236-6581
  • Mfr. Part No. 1SDA068066R1 XT3N 250 TMD 250A 3P+N FF
Each
£865.67
  • RS Stock No. 647-8718
  • Mfr. Part No. MF-RX185/72-0
Each (In a Pack of 10)
£0.314
  • RS Stock No. 129-092
  • Mfr. Part No. 142519 FAZT-C32/3N
Each
£216.32
  • RS Stock No. 397-565
  • Mfr. Part No. 3NA3144
Each (In a Pack of 3)
£12.087
Better World
  • RS Stock No. 776-6912
  • Mfr. Part No. A9F04210
Each
£77.98
Better World
  • RS Stock No. 212-1625
  • Mfr. Part No. 2CDS252280R0164
Each
£40.04
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