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

27 of 999+
  • RS Stock No. 123-284
  • Mfr. Part No. 170740 FRBMM-C16/3/003-A
Each
£146.21(exc. VAT)
  • RS Stock No. 417-307
  • Mfr. Part No. NL250
Each
£28.63(exc. VAT)
  • RS Stock No. 563-586
Each (In a Pack of 10)
£0.394(exc. VAT)
  • RS Stock No. 563-615
Each (In a Pack of 10)
£0.385(exc. VAT)
  • RS Stock No. 830-4234
  • Mfr. Part No. 8020.5017.G
Each (In a Pack of 10)
£0.835(exc. VAT)
  • RS Stock No. 188-7000
  • Mfr. Part No. G200750
1 Pack of 10
£13.85(exc. VAT)
  • RS Stock No. 878-1299
  • Mfr. Part No. 0298400.ZXH
Each
£7.90(exc. VAT)
  • RS Stock No. 413-226
Each (In a Pack of 10)
£1.02(exc. VAT)
  • RS Stock No. 731-9433
  • Mfr. Part No. 4 049 26
Each
£7.32(exc. VAT)
  • RS Stock No. 868-9169
  • Mfr. Part No. 4430.2078
Each
£23.22(exc. VAT)
  • RS Stock No. 177-5063
  • Mfr. Part No. 2CSF202199R1250 F202 A-25/0,03 110V
Each
£149.56(exc. VAT)
  • RS Stock No. 563-621
Each (In a Pack of 10)
£0.271(exc. VAT)
  • RS Stock No. 563-738
Each (In a Pack of 10)
£0.323(exc. VAT)
  • RS Stock No. 563-778
Each (In a Pack of 10)
£0.447(exc. VAT)
  • RS Stock No. 230-2960
  • Mfr. Part No. A211025
1 Pack of 10
£11.06(exc. VAT)
  • RS Stock No. 228-866
  • Mfr. Part No. CH141DIU 1P 14x51 Neon Indicator Fuse Holder
1 Pack of 6
£93.15(exc. VAT)
  • RS Stock No. 417-313
  • Mfr. Part No. NL630
Each
£56.78(exc. VAT)
  • RS Stock No. 563-479
Each (In a Pack of 10)
£0.278(exc. VAT)
Better World
  • RS Stock No. 790-9222
  • Mfr. Part No. A9D31832
Each
£148.47(exc. VAT)
  • RS Stock No. 247-4043
Each (In a Pack of 10)
£0.955(exc. VAT)
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