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

415 of 999+
Better World
  • RS Stock No. 249-388
  • Mfr. Part No. 3VA6460-6HN41-0AA0
Each
£2,879.32(exc. VAT)
Better World
  • RS Stock No. 202-7230
  • Mfr. Part No. 5SL6325-7
Each
£65.90(exc. VAT)
  • RS Stock No. 900-1576
  • Mfr. Part No. 6D27SB
Each (In a Pack of 10)
£2.992(exc. VAT)
  • RS Stock No. 259-3443
  • Mfr. Part No. 1SDA071386R1
Each
£5,115.47(exc. VAT)
Better World
  • RS Stock No. 622-0064
  • Mfr. Part No. 5SY4115-7
Each
£17.62(exc. VAT)
  • RS Stock No. 868-9106
  • Mfr. Part No. 4430.0990
Each
£33.58(exc. VAT)
  • RS Stock No. 257-490
  • Mfr. Part No. 3VA5580-5EC66-0AA0
Each
£2,469.25(exc. VAT)
Better World
  • RS Stock No. 271-9583
  • Mfr. Part No. 3VA10323ED360AA0
Each
£169.56(exc. VAT)
  • RS Stock No. 141-043
  • Mfr. Part No. 2CCS882001R0135
Each
£95.28(exc. VAT)
  • RS Stock No. 654-842
  • Mfr. Part No. A9DH3610
Each
£221.06(exc. VAT)
  • RS Stock No. 237-5125
  • Mfr. Part No. 2CSR254101R1504
Each
£432.27(exc. VAT)
  • RS Stock No. 257-320
  • Mfr. Part No. 3VA5335-7EC41-0AA0
Each
£1,833.68(exc. VAT)
  • RS Stock No. 241-6167
  • Mfr. Part No. 3061363
Each (In a Pack of 10)
£8.387(exc. VAT)
  • RS Stock No. 178-1077
  • Mfr. Part No. H226327 / BTM42V400
Each
£69.51(exc. VAT)
  • RS Stock No. 254-075
  • Mfr. Part No. 256702 ZSD-SA/12X5/CU/1P/B12
Each
£5.66(exc. VAT)
  • RS Stock No. 283-5481
  • Mfr. Part No. 2-5700-IG1-P10-6A
Each
£16.52(exc. VAT)
  • RS Stock No. 630-821
  • Mfr. Part No. K085408Q
1 Box of 10
£11.20(exc. VAT)
  • RS Stock No. 228-720
  • Mfr. Part No. 24FFMSJ45
Each
£818.03(exc. VAT)
  • RS Stock No. 188-4505
Each (In a Box of 200)
£26.82(exc. VAT)
  • RS Stock No. 697-226
  • Mfr. Part No. RND 170-00074
1 Pack of 25
£1.45(exc. VAT)
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