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.

50973 Products showing for Fuses & Circuit Breakers

650 of 999+
Better World
  • RS Stock No. 202-7154
  • Mfr. Part No. 5SL6320-7
Each
£65.90
  • RS Stock No. 245-024
  • Mfr. Part No. A9D06816
Each
£166.42
  • RS Stock No. 237-6240
  • Mfr. Part No. 1SDA067099R1 XT2N 160 Ekip I 100A FF
Each
£733.52
Better World
  • RS Stock No. 201-2242
  • Mfr. Part No. A9DC7616
Each
£173.74
Better World
  • RS Stock No. 282-6243
  • Mfr. Part No. PV-355A-2XL-B
Each
£364.20
  • RS Stock No. 922-7181
  • Mfr. Part No. 279128 FAZ-C16/1-DC
Each
£71.11
  • RS Stock No. 218-8881
  • Mfr. Part No. 1492-SPM3D100-N
Each
£87.86
  • RS Stock No. 395-698
  • Mfr. Part No. 3NA6817
Each (In a Pack of 3)
£5.647
  • RS Stock No. 203-074
  • Mfr. Part No. 2CDS242701R0634
Each
£54.56
  • RS Stock No. 254-789
  • Mfr. Part No. 259610 NZM2/3-XUHIV220-250DC
Each
£172.62
  • RS Stock No. 429-392
  • Mfr. Part No. C160N32AFM
Each
£12,061.23
  • RS Stock No. 599-908
  • Mfr. Part No. NGN302
Each
£187.51
  • RS Stock No. 255-980
  • Mfr. Part No. 268983 Z-SLS/B-1A
Each
£50.09
  • RS Stock No. 922-7172
  • Mfr. Part No. 279126 FAZ-C10/1-DC
Each
£68.28
  • RS Stock No. 236-6877
  • Mfr. Part No. 1SDA100293R1 Ekip Hi-T LSI In=250A XT4
Each
£2,034.45
  • RS Stock No. 123-350
  • Mfr. Part No. 170894 FRBM6-D16/3N/003-A
Each
£182.97
  • RS Stock No. 140-345
  • Mfr. Part No. 2CCS861001R0134
Each
£59.97
  • RS Stock No. 262-452
  • Mfr. Part No. LP-CC-1-6/10
1 Pack of 10
£411.08
  • RS Stock No. 173-9903
  • Mfr. Part No. 3101.0035
Each (In a Box of 100)
£1.932
  • RS Stock No. 764-9472P
Each (Supplied in a Bag)
£0.407
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