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

436 of 999+
  • RS Stock No. 110-282
  • Mfr. Part No. A9D55416
Each
£547.43(exc. VAT)
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  • Mfr. Part No. 153380 NZMB2-4-AF60-BT-NA
Each
£929.39(exc. VAT)
  • RS Stock No. 259-3656
  • Mfr. Part No. 1SDA071630R1
Each
£9,456.82(exc. VAT)
  • RS Stock No. 232-0201
  • Mfr. Part No. 1SDA066662R1 LTC XT4 2PCS
Each
£20.50(exc. VAT)
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  • Mfr. Part No. 1492-SPM1C160
Each
£18.47(exc. VAT)
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  • Mfr. Part No. 239039 FAZ6-C25/1
Each
£20.67(exc. VAT)
  • RS Stock No. 231-782
  • Mfr. Part No. 120805 BB-EC/2+3P
1 Pack of 10
£4.13(exc. VAT)
  • RS Stock No. 230-887
  • Mfr. Part No. 113584 NZMH3-4-AE400-T-AVE
Each
£4,062.07(exc. VAT)
Better World
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  • Mfr. Part No. 2CDS274001R0065 S204M-B6
Each
£140.19(exc. VAT)
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  • Mfr. Part No. 2CSR255170R1064 DSH201 C6 A30
1 Box of 1
£71.23(exc. VAT)
Better World
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Each
£28.84(exc. VAT)
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Each
£117.99(exc. VAT)
  • RS Stock No. 769-3334
  • Mfr. Part No. SS-5-1A-BK
Each (In a Pack of 5)
£0.69(exc. VAT)
  • RS Stock No. 260-9430
  • Mfr. Part No. C10F3TM025
Each
£488.38(exc. VAT)
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  • Mfr. Part No. 2CDL230001R1648 PS 3/48/16H
1 Box of 1
£82.59(exc. VAT)
  • RS Stock No. 289-0563
  • Mfr. Part No. 1140-G111-P1M1-7A
Each
£15.97(exc. VAT)
Better World
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  • Mfr. Part No. A9F94416
Each
£383.53(exc. VAT)
  • RS Stock No. 231-9365
  • Mfr. Part No. 1SDA104934R1 YO-C XT5-XT6 F/P 110.240Va
Each
£96.61(exc. VAT)
Better World
  • RS Stock No. 211-6003
  • Mfr. Part No. 3VA1125-4EE42-0AA0
Each
£241.01(exc. VAT)
Better World
  • RS Stock No. 187-3282
  • Mfr. Part No. 5SV1316-6KK13
Each
£101.90(exc. VAT)
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