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. 250-4142
  • Mfr. Part No. 1SDA054413R1
Each
£2,469.62(exc. VAT)
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  • Mfr. Part No. 158331 SPBT12-280/4
Each
£549.77(exc. VAT)
  • RS Stock No. 288-7078
  • Mfr. Part No. A9F90216
Each
£78.33(exc. VAT)
  • RS Stock No. 259-638
  • Mfr. Part No. 269336 NZMH3-VE400-NA
Each
£2,844.39(exc. VAT)
  • RS Stock No. 266-9584
  • Mfr. Part No. 5SY1706-4
Each
£27.24(exc. VAT)
Better World
  • RS Stock No. 791-3256
  • Mfr. Part No. A9F53410
Each
£183.10(exc. VAT)
  • RS Stock No. 188-1675
  • Mfr. Part No. ULC157A18A
Each
£131.61(exc. VAT)
  • RS Stock No. 201-6257
  • Mfr. Part No. 2906820
Each
£91.49(exc. VAT)
  • RS Stock No. 255-2328
  • Mfr. Part No. 410855
Each
£375.25(exc. VAT)
  • RS Stock No. 261-653
  • Mfr. Part No. LP-CC-2-8/10
1 Pack of 10
£411.08(exc. VAT)
  • RS Stock No. 854-9291
  • Mfr. Part No. F09A250V10AS
Each (In a Pack of 10)
£21.291(exc. VAT)
Better World
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  • Mfr. Part No. LV429526
Each
£12.91(exc. VAT)
Better World
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  • Mfr. Part No. 1SDA068055R1 XT3N 250 TMD 100A FF
Each
£365.50(exc. VAT)
Better World
  • RS Stock No. 160-226
  • Mfr. Part No. 3RV2332-4TC10
Each
£194.80(exc. VAT)
  • RS Stock No. 630-823
  • Mfr. Part No. K090537Q
1 Box of 10
£5.59(exc. VAT)
  • RS Stock No. 187-5243
  • Mfr. Part No. 5ST3820-3
Each
£16.99(exc. VAT)
Better World
  • RS Stock No. 271-9418
  • Mfr. Part No. 3VA1180-4ED22-0AA0
Each
£189.42(exc. VAT)
  • RS Stock No. 300-028
  • Mfr. Part No. 3NW7054
Each
£32.80(exc. VAT)
  • RS Stock No. 767-5080
Each (In a Pack of 10)
£0.567(exc. VAT)
  • RS Stock No. 203-1998
  • Mfr. Part No. 3NA3352
Each (In a Pack of 3)
£25.46(exc. VAT)
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