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

413 of 999+
Better World
  • RS Stock No. 219-9132
  • Mfr. Part No. M9F22316
Each
£119.69(exc. VAT)
  • RS Stock No. 192-0889
  • Mfr. Part No. 1SDA066821R1
Each
£517.69(exc. VAT)
  • RS Stock No. 132-928
  • Mfr. Part No. 183895 IZMX40B4-V10F-1
Each
£7,023.83(exc. VAT)
  • RS Stock No. 111-3541
  • Mfr. Part No. PYDN-31.0-080S
Each
£4.42(exc. VAT)
  • RS Stock No. 565-392
  • Mfr. Part No. 37202500431
Each
£162.98(exc. VAT)
  • RS Stock No. 787-4350P
  • Mfr. Part No. 277.6106.0002
Each (Supplied in a Bag)
£2.85(exc. VAT)
Better World
  • RS Stock No. 209-6739
  • Mfr. Part No. 3VA1032-3ED32-0AA0
Each
£153.86(exc. VAT)
  • RS Stock No. 120-977
  • Mfr. Part No. 168201 FRBDM-C6/2/003-G/A
Each
£155.61(exc. VAT)
Better World
  • RS Stock No. 243-6147
  • Mfr. Part No. 5SU1324-6FR16
Each
£127.65(exc. VAT)
Better World
  • RS Stock No. 212-1620
  • Mfr. Part No. 2CDS252280R0065
Each
£40.04(exc. VAT)
Better World
  • RS Stock No. 259-3157
  • Mfr. Part No. 1SDA071012R1
Each
£5,396.05(exc. VAT)
  • RS Stock No. 769-4554
  • Mfr. Part No. 239036 FAZ6-C13/1
Each
£20.67(exc. VAT)
  • RS Stock No. 231-9308
  • Mfr. Part No. 2CCS500900R0181 ZLS725 Intermediate pie
Each
£50.91(exc. VAT)
  • RS Stock No. 732-0089
  • Mfr. Part No. 4 116 66
Each
£300.82(exc. VAT)
  • RS Stock No. 261-403
  • Mfr. Part No. PXS24E08A002 PXS24E-e8/F
Each
£31.72(exc. VAT)
  • RS Stock No. 787-4117P
  • Mfr. Part No. 0297002.WXNV
Each (Supplied in a Bag)
£0.21(exc. VAT)
Better World
  • RS Stock No. 210-1696
  • Mfr. Part No. 3VA1450-5EF32-0AA0
Each
£1,255.41(exc. VAT)
  • RS Stock No. 177-8008
Each (In a Box of 500)
£0.287(exc. VAT)
  • RS Stock No. 574-845
  • Mfr. Part No. Y300.476.01 2-5000 TERMINAL SHROUD
Each
£2.67(exc. VAT)
  • RS Stock No. 252-5353
  • Mfr. Part No. 68730250
Each (In a Pack of 3)
£23.933(exc. VAT)
Results per page