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.

50957 Products showing for Fuses & Circuit Breakers

115 of 999+
  • RS Stock No. 182-1665
  • Mfr. Part No. TC100
Each
£52.87
  • RS Stock No. 293-8193
  • Mfr. Part No. 0 123 10
1 Pack of 10
£14.87
  • RS Stock No. 782-3695
  • Mfr. Part No. FX0463
Each
£7.96
Better World
  • RS Stock No. 219-9273
  • Mfr. Part No. A9F94202
Each
£142.37
  • RS Stock No. 542-1244
  • Mfr. Part No. 02181.25MXP
Each (In a Pack of 10)
£0.938
  • RS Stock No. 136-0582
  • Mfr. Part No. E1018559 / FR22GR69V80
Each
£22.88
  • RS Stock No. 417-010
  • Mfr. Part No. 1110-F112-P1M1-10A
Each
£17.56
  • RS Stock No. 876-8000
  • Mfr. Part No. 0498080
Each
£2.35
  • RS Stock No. 167-4387
  • Mfr. Part No. 0 134 32
Each (In a Pack of 10)
£3.077
  • RS Stock No. 213-2554
  • Mfr. Part No. 5ST3607
Each (In a Pack of 10)
£5.565
Better World
  • RS Stock No. 746-7784
  • Mfr. Part No. 2CDS253001R0504 S203-C50
Each
£67.12
  • RS Stock No. 769-0010
  • Mfr. Part No. 021501.6MXP
Each (In a Pack of 25)
£1.534
Better World
  • RS Stock No. 790-8780
  • Mfr. Part No. A9F43202
Each
£93.91
  • RS Stock No. 787-4322P
  • Mfr. Part No. 0464001.DR
Each (Supplied on a Reel)
£0.80
Better World
  • RS Stock No. 850-8616
  • Mfr. Part No. EZ9F16150
Each
£2.44
  • RS Stock No. 289-1582
  • Mfr. Part No. 1SDA055041R1
Each
£147.66
  • RS Stock No. 361-8159
  • Mfr. Part No. 171530.0,5
Each (In a Pack of 10)
£1.394
  • RS Stock No. 541-4460
  • Mfr. Part No. 0216.500MXP
Each (In a Pack of 10)
£0.819
Better World
  • RS Stock No. 238-3298
  • Mfr. Part No. A9DK5716
Each
£321.84
  • RS Stock No. 867-4365
  • Mfr. Part No. 3101.0215
Each (In a Pack of 10)
£3.431
Results per page