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.

50915 Products showing for Fuses & Circuit Breakers

358 of 999+
  • RS Stock No. 250-8620
  • Mfr. Part No. LF406M
Each (In a Pack of 10)
£3.825(exc. VAT)
  • RS Stock No. 182-4086
Each (In a Pack of 5)
£0.674(exc. VAT)
  • RS Stock No. 237-5170
  • Mfr. Part No. 2CSR273101R1065
Each
£281.48(exc. VAT)
  • RS Stock No. 217-6378
  • Mfr. Part No. 2800891
Each
£76.04(exc. VAT)
Better World
  • RS Stock No. 238-3319
  • Mfr. Part No. A9DQ3725
Each
£749.02(exc. VAT)
  • RS Stock No. 259-3405
  • Mfr. Part No. 1SDA071339R1
Each
£6,900.92(exc. VAT)
  • RS Stock No. 284-5243
  • Mfr. Part No. 0034.6606
Each (In a Pack of 10)
£0.363(exc. VAT)
Better World
  • RS Stock No. 238-3261
  • Mfr. Part No. A9DA3720
Each
£385.02(exc. VAT)
  • RS Stock No. 260-7932
  • Mfr. Part No. C25N32D100
Each
£1,214.00(exc. VAT)
  • RS Stock No. 182-3888
1 Box of 1000
£2,842.13(exc. VAT)
  • RS Stock No. 201-5738
  • Mfr. Part No. 2800898
Each
£100.93(exc. VAT)
Better World
  • RS Stock No. 124-3220
  • Mfr. Part No. 5SY4563-7
Each
£77.67(exc. VAT)
  • RS Stock No. 259-9748
  • Mfr. Part No. 1SCA108250R1001
Each
£3.74(exc. VAT)
  • RS Stock No. 627-468
  • Mfr. Part No. 8PQ5000-4BA58
Each
£45.23(exc. VAT)
  • RS Stock No. 630-870
  • Mfr. Part No. F090533Q
1 Box of 10
£6.13(exc. VAT)
  • RS Stock No. 629-072
  • Mfr. Part No. 8GK9002-0KK10
Each
£7.89(exc. VAT)
  • RS Stock No. 204-422
  • Mfr. Part No. 2CDS274061R0278
Each
£489.71(exc. VAT)
  • RS Stock No. 270-3051
  • Mfr. Part No. J085407
Each (In a Box of 10)
£0.906(exc. VAT)
  • RS Stock No. 249-765
  • Mfr. Part No. 3VA6560-5JQ36-2AA0
Each
£4,474.12(exc. VAT)
Better World
  • RS Stock No. 254-6285
  • Mfr. Part No. C10F3TM016
Each
£488.38(exc. VAT)
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