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

510 of 999+
  • RS Stock No. 647-8190P
  • Mfr. Part No. MF-MSMF075-2
Each (Supplied on a Reel)
£0.209(exc. VAT)
  • RS Stock No. 259-151
  • Mfr. Part No. 283860 XBBB06
Each
£17.69(exc. VAT)
  • RS Stock No. 226-6549
  • Mfr. Part No. 37011000000
Each (In a Pack of 10)
£0.955(exc. VAT)
  • RS Stock No. 260-8208
  • Mfr. Part No. C63F4TM500D1
Each
£3,980.88(exc. VAT)
Better World
  • RS Stock No. 122-9475
  • Mfr. Part No. 3RT2916-1BE00
Each
£7.70(exc. VAT)
Better World
  • RS Stock No. 225-8806
  • Mfr. Part No. 5SV1316-3KK06
Each
£226.68(exc. VAT)
Better World
  • RS Stock No. 260-204
  • Mfr. Part No. 3VA6340-6HN31-0AA0
Each
£1,636.65(exc. VAT)
  • RS Stock No. 256-582
  • Mfr. Part No. 3VA5322-5EC31-1AA0
Each
£985.03(exc. VAT)
Better World
  • RS Stock No. 216-6010
  • Mfr. Part No. 5SL6150-6
Each
£17.94(exc. VAT)
  • RS Stock No. 246-2651
  • Mfr. Part No. 2CCS573001R0407
Each
£113.26(exc. VAT)
  • RS Stock No. 284-5849
  • Mfr. Part No. 4400.0001
Each
£8.72(exc. VAT)
Better World
  • RS Stock No. 239-4979
Each (In a Pack of 10)
£5.883(exc. VAT)
  • RS Stock No. 488-6971
  • Mfr. Part No. 2CDS251001R0205 - S201B20
Each
£16.38(exc. VAT)
  • RS Stock No. 250-4416
  • Mfr. Part No. 1SCA022697R6330
1 Box of 3
£53.68(exc. VAT)
  • RS Stock No. 232-0219
  • Mfr. Part No. 1SDA066821R1 XT1B 160 TMD 160A FF
Each
£460.17(exc. VAT)
Better World
  • RS Stock No. 236-7519
  • Mfr. Part No. 1SDA067838R1 XT2S 160 Ekip LS/I 160A 4P
Each
£757.82(exc. VAT)
  • RS Stock No. 266-608
  • Mfr. Part No. 3VW8116-7AF01
Each
£1,688.80(exc. VAT)
  • RS Stock No. 284-6334
  • Mfr. Part No. 1BR1430
1 Box of 10
£136.62(exc. VAT)
  • RS Stock No. 120-300
  • Mfr. Part No. 167123 FRCMM-40/2/03-G/A-NA
Each
£158.29(exc. VAT)
Better World
  • RS Stock No. 211-0359
  • Mfr. Part No. KBA40AF
Each (In a Pack of 5)
£7.69(exc. VAT)
Results per page