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

509 of 999+
  • RS Stock No. 260-7927
  • Mfr. Part No. C25H4TM250
Each
£2,195.24(exc. VAT)
  • RS Stock No. 242-997
  • Mfr. Part No. 190834 FAZ-D10/4-NA
Each
£232.99(exc. VAT)
  • RS Stock No. 181-1266
  • Mfr. Part No. 4ELM4
Each
£4.83(exc. VAT)
  • RS Stock No. 140-261
  • Mfr. Part No. 2CCS863001R1845
Each
£373.05(exc. VAT)
  • RS Stock No. 200-905
  • Mfr. Part No. 2CDS382001R0084
Each
£67.88(exc. VAT)
  • RS Stock No. 140-784
  • Mfr. Part No. 2CCS881001R0324
Each
£39.47(exc. VAT)
Better World
  • RS Stock No. 219-9050
  • Mfr. Part No. DF2CA32
Each (In a Pack of 10)
£8.504(exc. VAT)
Better World
  • RS Stock No. 245-460
  • Mfr. Part No. 3VA6140-8JT31-0AA0
Each
£1,136.56(exc. VAT)
Better World
  • RS Stock No. 160-194
  • Mfr. Part No. 3RV2421-0AA10
Each
£69.62(exc. VAT)
  • RS Stock No. 608-846
  • Mfr. Part No. 3NE8814-0MK
1 Pack of 3
£77.55(exc. VAT)
  • RS Stock No. 764-9551
Each (In a Pack of 10)
£0.575(exc. VAT)
  • RS Stock No. 243-051
  • Mfr. Part No. 191654 NZMS2-VX160-SVE
Each
£1,146.26(exc. VAT)
  • RS Stock No. 358-303
  • Mfr. Part No. BDF46020
Each
£860.02(exc. VAT)
  • RS Stock No. 203-2226
  • Mfr. Part No. 5TG8240
Each (In a Pack of 2)
£2.85(exc. VAT)
  • RS Stock No. 299-075
  • Mfr. Part No. 1SNF100028R0000
Each
£13.84(exc. VAT)
  • RS Stock No. 210-4735
  • Mfr. Part No. EUBLMC6B30A
Each
£57.18(exc. VAT)
Better World
  • RS Stock No. 791-3035
  • Mfr. Part No. A9A27008
Each
£46.24(exc. VAT)
  • RS Stock No. 537-1228
  • Mfr. Part No. S500-800-R
Each (In a Pack of 10)
£0.279(exc. VAT)
  • RS Stock No. 703-2631
  • Mfr. Part No. 8020.0519.PT
Each (In a Pack of 10)
£0.41(exc. VAT)
  • RS Stock No. 647-8190P
  • Mfr. Part No. MF-MSMF075-2
Each (Supplied on a Reel)
£0.209(exc. VAT)
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