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

674 of 999+
  • RS Stock No. 181-8608
  • Mfr. Part No. 200MJ31-7
Each (In a Box of 10)
£63.244
Better World
  • RS Stock No. 225-8747
  • Mfr. Part No. 5SU1354-6LB13
Each
£226.68
  • RS Stock No. 123-653
  • Mfr. Part No. 170789 FRBMM-C20/2/003-A
Each
£112.86
  • RS Stock No. 599-800
  • Mfr. Part No. NKN316
Each
£174.43
  • RS Stock No. 255-173
  • Mfr. Part No. 260176 NZM3-XTVDV
Each
£187.93
  • RS Stock No. 174-0422
  • Mfr. Part No. RF2611-000
1 Box of 10000
£1,871.86
  • RS Stock No. 299-877
  • Mfr. Part No. 5SD7581-3
Each
£244.15
  • RS Stock No. 553-001
  • Mfr. Part No. 04450001N
1 Bag of 1000
£180.01
  • RS Stock No. 346-631
  • Mfr. Part No. LV4344AHT
Each
£57.68
  • RS Stock No. 236-6876
  • Mfr. Part No. 1SDA100287R1 Ekip LSI 250A XT4 3p
Each
£1,271.54
  • RS Stock No. 256-529
  • Mfr. Part No. 3VA5320-6EC31-1AA0
Each
£1,113.84
  • RS Stock No. 712-4780P
  • Mfr. Part No. 0090.0025
Each (Supplied in a Bag)
£15.77
  • RS Stock No. 202-7156
  • Mfr. Part No. 5SG1653
Each (In a Pack of 6)
£5.178
  • RS Stock No. 263-149
  • Mfr. Part No. CHM3DIU
1 Pack of 4
£77.84
Better World
  • RS Stock No. 210-1720
  • Mfr. Part No. 3VA2116-6HL32-0AA0
Each
£632.71
  • RS Stock No. 212-1913
  • Mfr. Part No. 3130-F110-P7T1-W02Q-15A
Each
£18.42
  • RS Stock No. 201-6973
  • Mfr. Part No. 2CSR255480R1104
Each
£152.30
  • RS Stock No. 237-5999
  • Mfr. Part No. 1SDA061967R1 T7S 800A PR332-LSI FF
Each
£2,953.02
  • RS Stock No. 703-8661P
  • Mfr. Part No. 32NHG0B
Each (Supplied in a Bag)
£7.30
  • RS Stock No. 240-175
  • Mfr. Part No. 147390 NZMN2-VE100-BT
Each
£896.26
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