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.

50907 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 226-1005
  • Mfr. Part No. 157.5701.6421
Each
£6.34(exc. VAT)
  • RS Stock No. 273-2324
  • Mfr. Part No. 140MT-C-W543
Each
£14.89(exc. VAT)
  • RS Stock No. 654-775
  • Mfr. Part No. A9D73610
Each
£246.59(exc. VAT)
  • RS Stock No. 610-422
  • Mfr. Part No. 5SY4263-5
Each
£209.99(exc. VAT)
Better World
  • RS Stock No. 271-9852
  • Mfr. Part No. 3VA1125-4ED12-0AA0
Each
£108.91(exc. VAT)
  • RS Stock No. 173-7920
  • Mfr. Part No. 3404.2420.22
1 Reel of 1000
£895.77(exc. VAT)
Better World
  • RS Stock No. 260-352
  • Mfr. Part No. 3VA6325-8HM31-2AA0
Each
£2,379.23(exc. VAT)
  • RS Stock No. 221-5578
  • Mfr. Part No. 3-125-263
Each
£8.95(exc. VAT)
Better World
  • RS Stock No. 248-3696
  • Mfr. Part No. A9R15440
Each
£292.84(exc. VAT)
  • RS Stock No. 213-2215
  • Mfr. Part No. 140MP-A-SNKJ
Each
£36.38(exc. VAT)
  • RS Stock No. 241-340
  • Mfr. Part No. 168854 BB-EVP-10/N-1MU
Each
£22.19(exc. VAT)
  • RS Stock No. 140-547
  • Mfr. Part No. 2CCS573001R0104
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£115.83(exc. VAT)
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  • Mfr. Part No. 400FMM
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£93.99(exc. VAT)
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  • Mfr. Part No. 2905989
Each
£287.84(exc. VAT)
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  • Mfr. Part No. ERBRE1R50V
Each (In a Pack of 10)
£0.209(exc. VAT)
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  • Mfr. Part No. 7TCA083670R0647 LK243-10
Each
£277.42(exc. VAT)
  • RS Stock No. 406-9485
  • Mfr. Part No. 8340-F410-P1M1-A3H0-25A
Each
£48.08(exc. VAT)
  • RS Stock No. 287-9635
  • Mfr. Part No. 1250A-3S-400
Each (In a Box of 48)
£288.202(exc. VAT)
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  • Mfr. Part No. LF310M
Each (In a Pack of 10)
£2.312(exc. VAT)
  • RS Stock No. 269-8380
  • Mfr. Part No. 3NW7232
Each
£96.08(exc. VAT)
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