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.

50958 Products showing for Fuses & Circuit Breakers

169 of 999+
  • RS Stock No. 868-9355
  • Mfr. Part No. 4435.0041
Each
£16.19
  • RS Stock No. 375-9581
  • Mfr. Part No. T212974C
Each (In a Pack of 3)
£6.923
  • RS Stock No. 144-1840
  • Mfr. Part No. 8020.5021.G
Each (In a Bag of 10)
£0.757
Better World
  • RS Stock No. 791-3354
  • Mfr. Part No. A9F54240
Each
£82.79
  • RS Stock No. 182-4207
Each (In a Pack of 5)
£3.788
  • RS Stock No. 226-0614
  • Mfr. Part No. 37214000001
Each (In a Pack of 10)
£0.578
  • RS Stock No. 144-4693
  • Mfr. Part No. KF83C
Each (In a Pack of 10)
£4.813
  • RS Stock No. 849-5746
  • Mfr. Part No. GMC-600-R
Each
£1.22
  • RS Stock No. 255-621
  • Mfr. Part No. 266633 NZM2-XHBR
Each
£119.90
  • RS Stock No. 339-831
  • Mfr. Part No. SEA9BPN8
Each
£431.30
  • RS Stock No. 188-4644
Each
£7.68
  • RS Stock No. 203-087
  • Mfr. Part No. 2CDS244701R0504
Each
£91.41
Better World
  • RS Stock No. 191-6126
  • Mfr. Part No. A9R67640
Each
£158.05
  • RS Stock No. 181-8832
  • Mfr. Part No. 355PJ30-7
Each
£37.86
  • RS Stock No. 139-961
1 Bag of 10
£4.05
  • RS Stock No. 203-2145
  • Mfr. Part No. 3NA7805
Each (In a Pack of 3)
£5.397
Better World
  • RS Stock No. 254-6353
  • Mfr. Part No. C25F32D250
Each
£1,673.58
  • RS Stock No. 221-3654
Each (In a Pack of 5)
£11.832
  • RS Stock No. 535-6140
  • Mfr. Part No. 2CDS273001R0405 S203M-B40
Each
£84.56
  • RS Stock No. 214-777
  • Mfr. Part No. EZ9E20MCU
Each
£124.71
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