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. 225-5935
  • Mfr. Part No. 2CCF019617R0001 S803PV-SP50 - 5 kA
Each
£306.27(exc. VAT)
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  • Mfr. Part No. 140MT-C-KN
Each
£2.77(exc. VAT)
  • RS Stock No. 729-2852
  • Mfr. Part No. 3600-P10-Si-8A
Each
£64.88(exc. VAT)
  • RS Stock No. 231-229
  • Mfr. Part No. 109694 NZMN3-4-A320
Each
£2,160.71(exc. VAT)
  • RS Stock No. 610-3442
  • Mfr. Part No. 2CSB204101R1250 - DDA204A-25/0,03
Each
£105.02(exc. VAT)
  • RS Stock No. 691-7500P
  • Mfr. Part No. MF-PSMF020X-2
Each (Supplied on a Reel)
£0.258(exc. VAT)
  • RS Stock No. 738-2885
  • Mfr. Part No. 0154.750DR
Each (In a Pack of 10)
£2.173(exc. VAT)
  • RS Stock No. 277-8527
Each
£7.49(exc. VAT)
  • RS Stock No. 627-031
  • Mfr. Part No. 3NB1328-4KK11
1 Pack of 2
£629.05(exc. VAT)
  • RS Stock No. 246-2553
  • Mfr. Part No. 2CCS571103R8597
Each
£149.21(exc. VAT)
  • RS Stock No. 289-1619
  • Mfr. Part No. 2CSF204023R3630
Each
£113.60(exc. VAT)
Better World
  • RS Stock No. 211-2485
  • Mfr. Part No. A9F92120
Each
£101.14(exc. VAT)
  • RS Stock No. 266-1341
  • Mfr. Part No. 409755
Each
£75.28(exc. VAT)
  • RS Stock No. 257-242
  • Mfr. Part No. 3VA5440-0MH31-0AA0
Each
£1,197.18(exc. VAT)
  • RS Stock No. 141-187
  • Mfr. Part No. 2CCS863001R0401
Each
£269.00(exc. VAT)
  • RS Stock No. 825-5687
  • Mfr. Part No. P1MB2PB32
Each
£44.14(exc. VAT)
  • RS Stock No. 851-1514
  • Mfr. Part No. AGA-5
Each
£2.26(exc. VAT)
  • RS Stock No. 181-8597
  • Mfr. Part No. 315MJ31-7
1 Box of 5
£285.89(exc. VAT)
  • RS Stock No. 212-138
  • Mfr. Part No. R9D03616
Each
£58.20(exc. VAT)
  • RS Stock No. 256-911
  • Mfr. Part No. 278579 FAZ-D8/1
Each
£44.47(exc. VAT)
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