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. 736-2683P
  • Mfr. Part No. 160016.2,5
Each (Supplied on a Reel)
£1.91(exc. VAT)
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  • Mfr. Part No. 176081 FAZ-B16/2-DC
Each
£121.41(exc. VAT)
  • RS Stock No. 249-005
  • Mfr. Part No. 191553 NZMH3-MX450-AVE
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£2,876.70(exc. VAT)
Better World
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Each
£246.25(exc. VAT)
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£20.79(exc. VAT)
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£2,152.17(exc. VAT)
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  • Mfr. Part No. 9000-41000-0000212
Each
£41.97(exc. VAT)
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  • Mfr. Part No. 1SCA022661R8920
1 Box of 3
£24.01(exc. VAT)
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Each (In a Pack of 10)
£0.526(exc. VAT)
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  • Mfr. Part No. 3120-N551-H7T1-W02D-20A
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£21.41(exc. VAT)
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£198.74(exc. VAT)
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  • Mfr. Part No. 4400.0029
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£8.42(exc. VAT)
Better World
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£88.38(exc. VAT)
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  • Mfr. Part No. 5SY4302-6
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£82.33(exc. VAT)
Better World
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£44.18(exc. VAT)
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  • Mfr. Part No. 8GB1371-2
Each
£87.28(exc. VAT)
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  • Mfr. Part No. TB32
1 Pack of 20
£397.71(exc. VAT)
  • RS Stock No. 738-2905P
  • Mfr. Part No. 0154.125DR
Each (Supplied on a Reel)
£2.755(exc. VAT)
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