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

553 of 999+
Better World
  • RS Stock No. 776-3470
  • Mfr. Part No. A9F74270
Each
£128.55(exc. VAT)
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  • Mfr. Part No. 0090.0004
Each
£17.27(exc. VAT)
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Each (In a Pack of 5)
£14.892(exc. VAT)
Better World
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Each
£20.89(exc. VAT)
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Each
£7.63(exc. VAT)
Better World
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£15.87(exc. VAT)
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£3.45(exc. VAT)
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Each
£3,294.47(exc. VAT)
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£1,321.08(exc. VAT)
Better World
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Each
£135.55(exc. VAT)
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£60.03(exc. VAT)
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£17.78(exc. VAT)
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Each
£61.05(exc. VAT)
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1 Box of 1000
£772.58(exc. VAT)
Better World
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Each
£1,583.43(exc. VAT)
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  • Mfr. Part No. 3VA5217-5EC31-1AA0
Each
£796.84(exc. VAT)
Better World
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  • Mfr. Part No. M9F22204
Each
£89.11(exc. VAT)
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Each
£252.89(exc. VAT)
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  • Mfr. Part No. 1492-GS1G010
Each
£90.64(exc. VAT)
  • RS Stock No. 647-8695P
  • Mfr. Part No. MF-RX135/72-0
Each (Supplied in a Bag)
£0.301(exc. VAT)
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