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.

50957 Products showing for Fuses & Circuit Breakers

696 of 999+
  • RS Stock No. 630-865
  • Mfr. Part No. E090509Q
1 Box of 10
£4.80
  • RS Stock No. 610-304
  • Mfr. Part No. 5SY4345-7
Each
£215.82
  • RS Stock No. 275-978
  • Mfr. Part No. 3VA9387-0TB60
Each (In a Pack of 5)
£48.974
  • RS Stock No. 257-227
  • Mfr. Part No. 3VA5340-5EC31-2AA0
Each
£1,253.61
  • RS Stock No. 260-7609
  • Mfr. Part No. C11F4TM063L
Each
£507.42
  • RS Stock No. 224-2520
  • Mfr. Part No. 49873420
Each
£89.53
  • RS Stock No. 335-406
  • Mfr. Part No. SED25032
Each
£152.45
  • RS Stock No. 255-497
  • Mfr. Part No. 250NHG03BI NH FUSE 250A 500V GL/GG SIZE 03
1 Pack of 3
£39.54
  • RS Stock No. 257-453
  • Mfr. Part No. 3VA5320-7EF41-0AA0
Each
£1,636.65
  • RS Stock No. 220-0600
  • Mfr. Part No. 1492-FB2C30-L
Each (In a Pack of 6)
£23.263
  • RS Stock No. 866-3441
  • Mfr. Part No. 0031.1667
Each (In a Pack of 100)
£2.963
  • RS Stock No. 177-5056
  • Mfr. Part No. 2CSF204401R1250 F204 A-25/0,03 AP-R
Each
£221.03
  • RS Stock No. 257-205
  • Mfr. Part No. 3VA5322-5EC41-0AA0
Each
£1,257.80
Better World
  • RS Stock No. 238-3404
  • Mfr. Part No. A9P34710
Each
£187.43
Better World
  • RS Stock No. 270-046
  • Mfr. Part No. 3VA6110-7HL31-0AA0
Each
£619.05
Better World
  • RS Stock No. 175-1470
  • Mfr. Part No. GV4LE12S
Each
£489.01
  • RS Stock No. 260-9419
  • Mfr. Part No. C10B4TM100
Each
£647.76
  • RS Stock No. 207-319
  • Mfr. Part No. 33664
Each
£224.25
  • RS Stock No. 251-3434
  • Mfr. Part No. 1SCA022627R1390
1 Box of 9
£38.13
  • RS Stock No. 261-317
  • Mfr. Part No. CM63FW
1 Pack of 10
£296.77
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