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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Better World
  • RS Stock No. 772-1458
  • Mfr. Part No. 5SY4525-7
Each
£54.31(exc. VAT)
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  • Mfr. Part No. 2CDS273337R0984
Each
£158.22(exc. VAT)
  • RS Stock No. 627-142
  • Mfr. Part No. 5ST3772
1 Pack of 10
£78.62(exc. VAT)
  • RS Stock No. 101-744
Each
£86.70(exc. VAT)
  • RS Stock No. 228-8196
  • Mfr. Part No. 3NX1024
Each
£16.18(exc. VAT)
  • RS Stock No. 202-7248
  • Mfr. Part No. 5SH5100
Each
£14.00(exc. VAT)
  • RS Stock No. 654-491
  • Mfr. Part No. C100H420FM
Each
£4,974.26(exc. VAT)
  • RS Stock No. 244-234
  • Mfr. Part No. 168846 BB-EVF-10/3P-1MU/AUX
Each
£57.91(exc. VAT)
  • RS Stock No. 231-770
  • Mfr. Part No. 120652 mRB6-16/3N/B/003-A
Each
£377.55(exc. VAT)
  • RS Stock No. 496-191
  • Mfr. Part No. 1461304
Each
£845.26(exc. VAT)
  • RS Stock No. 117-083
  • Mfr. Part No. FP 1415
Each
£288.75(exc. VAT)
  • RS Stock No. 246-2561
  • Mfr. Part No. 2CCS572001R0081
Each
£81.86(exc. VAT)
Better World
  • RS Stock No. 210-1699
  • Mfr. Part No. 3VA2010-5KP46-0AA0
Each
£1,045.47(exc. VAT)
  • RS Stock No. 255-1654
  • Mfr. Part No. 140G-H-NVM21B
Each
£175.57(exc. VAT)
  • RS Stock No. 269-7941
  • Mfr. Part No. 1115649
Each
£43.07(exc. VAT)
  • RS Stock No. 230-0989
  • Mfr. Part No. 177599 FAZ6-D0,5/4
Each
£161.06(exc. VAT)
  • RS Stock No. 226-0787P
  • Mfr. Part No. 3951315000
Each (Supplied as a Tape)
£1.142(exc. VAT)
  • RS Stock No. 187-5166
  • Mfr. Part No. 5ST3612
Each
£9.89(exc. VAT)
  • RS Stock No. 336-610
  • Mfr. Part No. SE10C320
Each
£103.09(exc. VAT)
  • RS Stock No. 182-1555
  • Mfr. Part No. RS200HWH
Each
£291.64(exc. VAT)
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