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

18 of 999+
Better World
  • RS Stock No. 527-9453
  • Mfr. Part No. 2CDS251001R0061 S201-D6
Each
£17.22(exc. VAT)
  • RS Stock No. 922-8752
  • Mfr. Part No. 236305 PKNM-32/1N/C/003-MW
Each
£133.30(exc. VAT)
  • RS Stock No. 264-9247
Each (In a Pack of 5)
£7.282(exc. VAT)
Better World
  • RS Stock No. 535-4122
  • Mfr. Part No. 2CDS271001R0044 S201M-C4
Each
£20.64(exc. VAT)
  • RS Stock No. 247-2740
  • Mfr. Part No. E222207
1 Box of 10
£32.83(exc. VAT)
  • RS Stock No. 191-9456
  • Mfr. Part No. 2CSS245102R0024 SN201 L C2-L
Each
£14.26(exc. VAT)
  • RS Stock No. 414-033
Each (In a Pack of 10)
£1.098(exc. VAT)
  • RS Stock No. 265-0162
Each
£7.80(exc. VAT)
  • RS Stock No. 124-3033
  • Mfr. Part No. EMCH116 EMCH116
Each
£24.15(exc. VAT)
  • RS Stock No. 563-340
1 Pack of 10
£2.53(exc. VAT)
  • RS Stock No. 521-2927
Each (In a Pack of 5)
£4.054(exc. VAT)
Better World
  • RS Stock No. 521-4939
  • Mfr. Part No. 5SY6102-7
Each
£19.01(exc. VAT)
  • RS Stock No. 242-1061
Each (In a Pack of 5)
£5.864(exc. VAT)
Better World
  • RS Stock No. 790-9305
  • Mfr. Part No. A9D11820
Each
£148.47(exc. VAT)
  • RS Stock No. 414-083
  • Mfr. Part No. NSD32
Each (In a Pack of 5)
£12.346(exc. VAT)
  • RS Stock No. 229-176
  • Mfr. Part No. C10G10 CYLINDRICAL FUSE 10 x 38 10A GG 500V AC
1 Pack of 10
£6.85(exc. VAT)
  • RS Stock No. 563-784
Each
£3.33(exc. VAT)
  • RS Stock No. 412-582
  • Mfr. Part No. TDC180-7A
1 Pack of 10
£2.79(exc. VAT)
  • RS Stock No. 284-6489
Each (In a Pack of 5)
£4.034(exc. VAT)
  • RS Stock No. 284-6016
  • Mfr. Part No. 4400.0034
Each
£8.15(exc. VAT)
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