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

72 of 999+
  • RS Stock No. 136-0621
  • Mfr. Part No. G1014582 / FR10GR69V30
Each
£6.70
  • RS Stock No. 174-0871
  • Mfr. Part No. RF2567-000
Each (In a Pack of 20)
£0.216
  • RS Stock No. 787-4117
  • Mfr. Part No. 0297002.WXNV
Each (In a Pack of 10)
£0.21
Better World
  • RS Stock No. 772-1379
  • Mfr. Part No. 5SY4316-8
Each
£83.14
  • RS Stock No. 848-2738
  • Mfr. Part No. AGC-10-R
Each
£1.01
  • RS Stock No. 412-447
  • Mfr. Part No. TDC11-500MA
Each (In a Pack of 10)
£1.225
  • RS Stock No. 187-807
  • Mfr. Part No. 99217
Each
£36.96
  • RS Stock No. 124-3047
  • Mfr. Part No. EMCH332 EMCH332
Each
£102.62
  • RS Stock No. 414-667
  • Mfr. Part No. NIT20M32
Each (In a Pack of 5)
£7.894
  • RS Stock No. 228-663
  • Mfr. Part No. C10M10 CYLINDRICAL FUSE 10 x 38 10A AM 500V AC
1 Pack of 10
£8.72
  • RS Stock No. 563-362
1 Pack of 10
£4.00
  • RS Stock No. 541-4599
  • Mfr. Part No. 0218015.MXP
Each (In a Pack of 10)
£1.344
  • RS Stock No. 181-8733
  • Mfr. Part No. 125NHG00B-690
Each
£6.60
Better World
  • RS Stock No. 221-1214
  • Mfr. Part No. LV429515
Each
£23.96
Better World
  • RS Stock No. 791-3458
  • Mfr. Part No. A9F54463
Each
£235.20
  • RS Stock No. 227-0723
  • Mfr. Part No. 264300 PFGM-40/4/003
Each
£71.31
  • RS Stock No. 787-4407
  • Mfr. Part No. 0298080.ZXEH
Each
£3.86
Better World
  • RS Stock No. 211-2355
  • Mfr. Part No. M9F22103
Each
£24.44
  • RS Stock No. 226-0894
  • Mfr. Part No. 157.5701.6251
Each
£7.08
Better World
  • RS Stock No. 211-2405
  • Mfr. Part No. M9F23332
Each
£126.42
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