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

312 of 999+
  • RS Stock No. 182-4067P
Each (Supplied in a Box)
£2.078(exc. VAT)
  • RS Stock No. 395-799
  • Mfr. Part No. 3NC1020
Each (In a Pack of 10)
£15.584(exc. VAT)
  • RS Stock No. 269-8336
  • Mfr. Part No. 3ND1810
Each (In a Pack of 3)
£10.787(exc. VAT)
  • RS Stock No. 335-291
  • Mfr. Part No. SE10C306
Each
£115.85(exc. VAT)
  • RS Stock No. 922-8591
  • Mfr. Part No. 235389 PFIM-16/2/001-MW
Each
£137.72(exc. VAT)
Better World
  • RS Stock No. 219-9128
  • Mfr. Part No. M9F22216
Each
£79.84(exc. VAT)
  • RS Stock No. 174-0421
  • Mfr. Part No. RF2723-000
1 Box of 5000
£1,760.39(exc. VAT)
  • RS Stock No. 182-1379
  • Mfr. Part No. 170M1571D
Each (In a Box of 10)
£82.366(exc. VAT)
  • RS Stock No. 231-202
  • Mfr. Part No. 107645 NZMN2-AF125-BT-NA
Each
£1,035.71(exc. VAT)
  • RS Stock No. 269-7063
  • Mfr. Part No. 3VA9113-0JC12
Each (In a Pack of 3)
£16.17(exc. VAT)
  • RS Stock No. 179-3004
  • Mfr. Part No. 2123050000
1 Box of 10
£36.76(exc. VAT)
  • RS Stock No. 703-2697P
  • Mfr. Part No. 3403.0160.24
Each (Supplied on a Reel)
£0.568(exc. VAT)
  • RS Stock No. 173-8109
  • Mfr. Part No. 3404.2472.22
1 Reel of 1000
£828.43(exc. VAT)
  • RS Stock No. 260-8263
  • Mfr. Part No. C63W42D630
Each
£5,514.46(exc. VAT)
  • RS Stock No. 518-327
  • Mfr. Part No. 2905414
Each
£265.04(exc. VAT)
  • RS Stock No. 101-791
Each
£198.16(exc. VAT)
  • RS Stock No. 488-6909
  • Mfr. Part No. 2CDS252001R0135 - S202B13
Each
£40.79(exc. VAT)
  • RS Stock No. 174-0869
  • Mfr. Part No. RF1347-000
Each (In a Pack of 20)
£0.232(exc. VAT)
  • RS Stock No. 284-6038
  • Mfr. Part No. 4410.0039
Each
£18.80(exc. VAT)
  • RS Stock No. 229-118
  • Mfr. Part No. FNQ-10
1 Pack of 10
£372.45(exc. VAT)
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