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. 189-5337
  • Mfr. Part No. S1062708 / CMC101I
Each
£9.46(exc. VAT)
  • RS Stock No. 264-9219
Each (In a Pack of 5)
£3.47(exc. VAT)
  • RS Stock No. 541-3495A
  • Mfr. Part No. 0219002.MXAP
Each (In a Pack of 100)
£0.213(exc. VAT)
  • RS Stock No. 269-8314
  • Mfr. Part No. 3NA7110
Each (In a Pack of 3)
£11.713(exc. VAT)
  • RS Stock No. 415-935
  • Mfr. Part No. 2211001
Each (In a Pack of 5)
£0.74(exc. VAT)
  • RS Stock No. 231-203
  • Mfr. Part No. 107648 NZMN2-AF200-BT-NA
Each
£1,390.31(exc. VAT)
  • RS Stock No. 231-9780
  • Mfr. Part No. 2CDS274337R0277 SU204M-K2
1 Box of 1
£257.10(exc. VAT)
  • RS Stock No. 231-9522
  • Mfr. Part No. 1SVR406570R0000 RB-JB10
Each
£1.70(exc. VAT)
  • RS Stock No. 270-3146
  • Mfr. Part No. Y233448
Each (In a Box of 10)
£0.601(exc. VAT)
Better World
  • RS Stock No. 219-9351
  • Mfr. Part No. LV429263
Each
£47.27(exc. VAT)
  • RS Stock No. 755-2876
  • Mfr. Part No. 3RV1935-1A
Each
£18.54(exc. VAT)
  • RS Stock No. 259-184
  • Mfr. Part No. 278591 FAZ-K1,6/1
Each
£35.71(exc. VAT)
  • RS Stock No. 787-4413P
  • Mfr. Part No. 0298125.ZXEH
Each (Supplied in a Bag)
£5.85(exc. VAT)
  • RS Stock No. 218-8898
  • Mfr. Part No. 1694-PF1244
Each
£20.08(exc. VAT)
  • RS Stock No. 130-910
  • Mfr. Part No. LV432464
Each
£1,807.10(exc. VAT)
  • RS Stock No. 252-5317
  • Mfr. Part No. 60230032
Each (In a Pack of 10)
£1.529(exc. VAT)
  • RS Stock No. 746-8188
  • Mfr. Part No. 2CDS273001R0161 S203M-D16
Each
£87.60(exc. VAT)
Better World
  • RS Stock No. 256-6764
  • Mfr. Part No. M9F22345
Each
£132.91(exc. VAT)
  • RS Stock No. 377-0314
  • Mfr. Part No. C201873
Each (In a Pack of 5)
£2.16(exc. VAT)
Better World
  • RS Stock No. 211-2345
  • Mfr. Part No. M9F21332
Each
£113.11(exc. VAT)
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