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

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  • RS Stock No. 181-8539
  • Mfr. Part No. LST6
1 Box of 20
£103.84(exc. VAT)
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Each
£25.95(exc. VAT)
  • RS Stock No. 624-0349
  • Mfr. Part No. 278555 FAZ-C6/1
Each
£24.77(exc. VAT)
Better World
  • RS Stock No. 231-9652
  • Mfr. Part No. 2CDS211001R0044 SH201-C 4
1 Box of 1
£15.23(exc. VAT)
Better World
  • RS Stock No. 791-3307
  • Mfr. Part No. A9F54120
Each
£24.20(exc. VAT)
  • RS Stock No. 563-762
Each (In a Pack of 10)
£0.377(exc. VAT)
  • RS Stock No. 412-560
  • Mfr. Part No. TDC180-3A
Each (In a Pack of 10)
£0.614(exc. VAT)
  • RS Stock No. 181-8518
  • Mfr. Part No. EFS250
Each
£25.69(exc. VAT)
Better World
  • RS Stock No. 791-3398
  • Mfr. Part No. A9F54332
Each
£106.92(exc. VAT)
  • RS Stock No. 412-582
  • Mfr. Part No. TDC180-7A
1 Pack of 10
£2.79(exc. VAT)
  • RS Stock No. 188-7000
  • Mfr. Part No. G200750
1 Pack of 10
£13.85(exc. VAT)
  • RS Stock No. 150-063
  • Mfr. Part No. X201.285.01 3/8"106CLEARCOVER+NUT
Each
£3.48(exc. VAT)
  • RS Stock No. 611-8955
Each
£123.45(exc. VAT)
  • RS Stock No. 782-7931
  • Mfr. Part No. W57-XB7A4A10-15
Each
£2.63(exc. VAT)
  • RS Stock No. 878-1296
  • Mfr. Part No. 0298300.ZXH
Each
£9.36(exc. VAT)
Better World
  • RS Stock No. 191-6084
  • Mfr. Part No. A9P22602
Each
£46.55(exc. VAT)
  • RS Stock No. 405-9179
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-20A
Each
£23.00(exc. VAT)
Better World
  • RS Stock No. 746-7558
  • Mfr. Part No. 2CDS252001R0065 S202-B6
Each
£44.36(exc. VAT)
Better World
  • RS Stock No. 132-009
  • Mfr. Part No. 2CDS272001R0024 S202M-C2
Each
£60.38(exc. VAT)
  • RS Stock No. 228-660
  • Mfr. Part No. C10G1 CYLINDRICAL FUSE 10 x 38 1A GG 500V AC
1 Pack of 10
£7.97(exc. VAT)
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