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

387 of 999+
  • RS Stock No. 276-8942
  • Mfr. Part No. R9ERC263
Each
£61.72(exc. VAT)
  • RS Stock No. 754-6326P
  • Mfr. Part No. 3413.0010.22
Each (Supplied on a Reel)
£0.441(exc. VAT)
  • RS Stock No. 627-133
  • Mfr. Part No. 3NC2225-0MK
1 Pack of 10
£105.18(exc. VAT)
  • RS Stock No. 237-5062
  • Mfr. Part No. 2CSR253001R1104
Each
£255.95(exc. VAT)
  • RS Stock No. 130-734
  • Mfr. Part No. A9D50232
Each
£548.32(exc. VAT)
  • RS Stock No. 260-8106
  • Mfr. Part No. C40F4TM400D
Each
£2,154.60(exc. VAT)
Better World
  • RS Stock No. 157-386
  • Mfr. Part No. 3VA2125-8HK32-0AA0
Each
£558.77(exc. VAT)
  • RS Stock No. 684-3608
  • Mfr. Part No. 0916610
Each
£16.63(exc. VAT)
  • RS Stock No. 216-6014
  • Mfr. Part No. 5ST3042
Each
£101.14(exc. VAT)
  • RS Stock No. 257-668
  • Mfr. Part No. 3VA5460-6EC31-1AA0
Each
£1,879.13(exc. VAT)
  • RS Stock No. 428-706
  • Mfr. Part No. NJJL36150
Each
£3,294.46(exc. VAT)
  • RS Stock No. 341-259
  • Mfr. Part No. C063H35EFM
Each
£8,517.14(exc. VAT)
  • RS Stock No. 232-059
  • Mfr. Part No. 110893 NZMN3-VE630-T
Each
£2,934.52(exc. VAT)
Better World
  • RS Stock No. 271-9365
  • Mfr. Part No. 3VA1150-5GD46-0AA0
Each
£271.22(exc. VAT)
  • RS Stock No. 244-740
  • Mfr. Part No. 147397 NZMN2-4-VE160-BT
Each
£1,419.22(exc. VAT)
  • RS Stock No. 169-9556
  • Mfr. Part No. SS-5H-5A-BK
Each (In a Bag of 200)
£0.305(exc. VAT)
Better World
  • RS Stock No. 210-1646
  • Mfr. Part No. 3VA1125-4EF46-0AA0
Each
£287.27(exc. VAT)
  • RS Stock No. 654-749
  • Mfr. Part No. A9R61240
Each
£255.25(exc. VAT)
  • RS Stock No. 174-0747
  • Mfr. Part No. 03400313Z
1 Pack of 1
£64.82(exc. VAT)
  • RS Stock No. 769-3397
  • Mfr. Part No. SS-5F-6-3A-BK
Each (In a Pack of 5)
£0.76(exc. VAT)
Results per page