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

540 of 999+
  • RS Stock No. 195-8748
  • Mfr. Part No. NIS6150MT1TXG
Each (On a Reel of 3000)
£0.446(exc. VAT)
  • RS Stock No. 250-8595
  • Mfr. Part No. LF304G
Each (In a Pack of 10)
£2.32(exc. VAT)
  • RS Stock No. 697-231
  • Mfr. Part No. RND 170-00059
1 Pack of 25
£1.45(exc. VAT)
  • RS Stock No. 288-7078
  • Mfr. Part No. A9F90216
Each
£78.33(exc. VAT)
  • RS Stock No. 624-0440
  • Mfr. Part No. 278874 FAZ-C20/3
Each
£95.22(exc. VAT)
Better World
  • RS Stock No. 238-3340
  • Mfr. Part No. A9DV3720
Each
£414.64(exc. VAT)
  • RS Stock No. 620-2870
  • Mfr. Part No. 0 225 03
Each
£135.42(exc. VAT)
  • RS Stock No. 260-7806
  • Mfr. Part No. C16N3TM125
Each
£842.04(exc. VAT)
  • RS Stock No. 182-4067
Each (In a Pack of 5)
£2.078(exc. VAT)
  • RS Stock No. 764-9554P
Each (Supplied in a Bag)
£0.557(exc. VAT)
Better World
  • RS Stock No. 791-3411
  • Mfr. Part No. A9F54402
Each
£227.18(exc. VAT)
  • RS Stock No. 122-495
  • Mfr. Part No. LV510536
Each
£182.77(exc. VAT)
  • RS Stock No. 261-356
  • Mfr. Part No. NSC/LINK
1 Pack of 10
£12.27(exc. VAT)
  • RS Stock No. 123-337
  • Mfr. Part No. 170825 FRBM6-C32/2/01-A
Each
£136.80(exc. VAT)
  • RS Stock No. 300-002
  • Mfr. Part No. 5SD7488-4
Each
£164.73(exc. VAT)
  • RS Stock No. 148-498
  • Mfr. Part No. 3VA5110-6ED31-0AA0
Each
£325.81(exc. VAT)
  • RS Stock No. 236-6854
  • Mfr. Part No. 1SDA069054R1 RHD_EM XT2-XT4 F/P EMERG
Each
£87.68(exc. VAT)
  • RS Stock No. 250-8653
  • Mfr. Part No. LF580G
Each (In a Pack of 10)
£7.967(exc. VAT)
  • RS Stock No. 229-069
  • Mfr. Part No. 15.5CAVH1E
1 Pack of 5
£900.03(exc. VAT)
  • RS Stock No. 182-1701
  • Mfr. Part No. 40ET
Each
£18.75(exc. VAT)
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