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

32 of 999+
  • RS Stock No. 421-788
  • Mfr. Part No. 20-003-13/200A
Each
£22.67(exc. VAT)
Better World
  • RS Stock No. 790-9260
  • Mfr. Part No. A9D11806
Each
£148.47(exc. VAT)
  • RS Stock No. 420-218
Each (In a Pack of 10)
£2.475(exc. VAT)
  • RS Stock No. 563-407
Each (In a Pack of 10)
£0.282(exc. VAT)
  • RS Stock No. 415-042
  • Mfr. Part No. FX0456
Each (In a Pack of 5)
£5.264(exc. VAT)
  • RS Stock No. 563-700
Each (In a Pack of 10)
£0.285(exc. VAT)
  • RS Stock No. 182-0347
  • Mfr. Part No. H215655
Each
£13.60(exc. VAT)
  • RS Stock No. 787-4378
  • Mfr. Part No. 02981001ZXT
Each
£15.14(exc. VAT)
  • RS Stock No. 277-3920
Each (In a Pack of 5)
£0.894(exc. VAT)
  • RS Stock No. 209-9305
1 Pack of 10
£20.90(exc. VAT)
  • RS Stock No. 922-7033
  • Mfr. Part No. 278578 FAZ-D6/1
Each
£25.96(exc. VAT)
  • RS Stock No. 230-1075
  • Mfr. Part No. 264744 PLG4-C10/1N
Each
£10.40(exc. VAT)
  • RS Stock No. 415-301
  • Mfr. Part No. TF200M250
Each
£88.03(exc. VAT)
  • RS Stock No. 247-3961
Each (In a Pack of 10)
£1.02(exc. VAT)
  • RS Stock No. 267-3537
  • Mfr. Part No. 70-010-05/2A
1 Pack of 5
£20.13(exc. VAT)
  • RS Stock No. 789-7814
  • Mfr. Part No. 0001.2506
Each (In a Bag of 10)
£0.537(exc. VAT)
  • RS Stock No. 156-8850
  • Mfr. Part No. 100LET
Each
£18.39(exc. VAT)
  • RS Stock No. 622-1102
  • Mfr. Part No. 5SE2335
Each (In a Pack of 10)
£3.232(exc. VAT)
  • RS Stock No. 563-346
Each (In a Pack of 10)
£0.253(exc. VAT)
  • RS Stock No. 124-3045
  • Mfr. Part No. EMCH316 EMCH316
Each
£102.62(exc. VAT)
Results per page