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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Better World
  • RS Stock No. 874-4247
  • Mfr. Part No. 3VA1120-4EF36-0AA0
Each
£221.51(exc. VAT)
  • RS Stock No. 120-388
  • Mfr. Part No. 167594 SPCT2-280/2
Each
£188.10(exc. VAT)
  • RS Stock No. 182-1514
  • Mfr. Part No. TF200M315
Each (In a Box of 5)
£95.464(exc. VAT)
  • RS Stock No. 712-7512
  • Mfr. Part No. AHEF050
Each (In a Pack of 10)
£0.519(exc. VAT)
  • RS Stock No. 252-5379
  • Mfr. Part No. 1115661
Each
£30.31(exc. VAT)
  • RS Stock No. 176-273
  • Mfr. Part No. 2CCS571001R0324 S401MC32
Each
£30.23(exc. VAT)
  • RS Stock No. 731-9960
  • Mfr. Part No. 4 111 87
Each
£534.37(exc. VAT)
Better World
  • RS Stock No. 211-2356
  • Mfr. Part No. M9F22108
Each
£22.71(exc. VAT)
  • RS Stock No. 335-396
  • Mfr. Part No. SEA9BPN8M
Each
£647.57(exc. VAT)
  • RS Stock No. 225-6089
  • Mfr. Part No. 2CSF202001R2250 F202 AC-25/0.1
Each
£114.22(exc. VAT)
  • RS Stock No. 767-4447
  • Mfr. Part No. 2CSR273001R1634 DS203 M AC-C63/0,03
Each
£249.57(exc. VAT)
  • RS Stock No. 230-0955
  • Mfr. Part No. 177406 FAZ6-C12/3
Each
£47.72(exc. VAT)
  • RS Stock No. 237-5150
  • Mfr. Part No. 2CSR272101R1635
Each
£281.53(exc. VAT)
  • RS Stock No. 339-813
  • Mfr. Part No. SEA9BINCKIT
Each
£130.18(exc. VAT)
Better World
  • RS Stock No. 232-0279
  • Mfr. Part No. 1SDA068220R1 XT3S 250 TMD 200A FF
Each
£539.80(exc. VAT)
  • RS Stock No. 187-8681
  • Mfr. Part No. SF-3812F3000T-2
Each (In a Pack of 10)
£2.59(exc. VAT)
  • RS Stock No. 136-0499
  • Mfr. Part No. F1018560 / FR22GR69V100
Each (In a Box of 10)
£31.885(exc. VAT)
  • RS Stock No. 203-1971
  • Mfr. Part No. 3NA3214
Each (In a Pack of 3)
£14.103(exc. VAT)
  • RS Stock No. 787-4369P
  • Mfr. Part No. 178.6764.0001
Each (Supplied in a Bag)
£2.52(exc. VAT)
  • RS Stock No. 396-370
  • Mfr. Part No. 3NE3222
Each (In a Pack of 3)
£142.30(exc. VAT)
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