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

110 of 999+
Better World
  • RS Stock No. 791-3492
  • Mfr. Part No. A9F55150
Each
£33.63
Better World
  • RS Stock No. 189-3188
  • Mfr. Part No. 5SL6116-6
Each
£4.06
  • RS Stock No. 312-2670
  • Mfr. Part No. FX0430/63
Each
£9.68
  • RS Stock No. 769-3337
  • Mfr. Part No. SS-5-2-5A-BK
Each (In a Pack of 5)
£0.694
Better World
  • RS Stock No. 791-3206
  • Mfr. Part No. A9F53225
Each
£76.17
  • RS Stock No. 231-9901
  • Mfr. Part No. 2CSF204101R1400 F204 A-40/0,03
Each
£170.99
  • RS Stock No. 169-9410
  • Mfr. Part No. S500-250-R
1 Bag of 1000
£482.03
  • RS Stock No. 517-6607
  • Mfr. Part No. RXEF025
Each (In a Pack of 10)
£0.352
Better World
  • RS Stock No. 489-6704
  • Mfr. Part No. 5SY6110-6
Each
£15.87
  • RS Stock No. 181-8622
  • Mfr. Part No. NSD32M40
Each
£9.91
  • RS Stock No. 490-462
  • Mfr. Part No. 236780 PXF-63/4/003-A
Each
£118.02
  • RS Stock No. 413-636
  • Mfr. Part No. 2312402
Each (In a Pack of 5)
£1.342
  • RS Stock No. 865-7764
  • Mfr. Part No. 0034.3882
Each (In a Pack of 10)
£0.756
  • RS Stock No. 276-8952
  • Mfr. Part No. R9H13403
Each
£31.34
  • RS Stock No. 414-415
Each (In a Pack of 10)
£1.008
  • RS Stock No. 787-4306
  • Mfr. Part No. 35421000029
Each (In a Pack of 5)
£1.78
  • RS Stock No. 541-2947
  • Mfr. Part No. 021301.6MXP
Each (In a Pack of 10)
£0.896
  • RS Stock No. 219-6096
  • Mfr. Part No. 0154001.DR
Each (In a Pack of 10)
£2.371
  • RS Stock No. 360-7294
  • Mfr. Part No. 01550100Z
Each (In a Pack of 5)
£2.566
  • RS Stock No. 849-6465
  • Mfr. Part No. EUC1P6B
Each
£6.76
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