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.

50915 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 577-464
  • Mfr. Part No. X20128501 I
Each
£2.44(exc. VAT)
  • RS Stock No. 417-098A
  • Mfr. Part No. FX0321
Each (In a Pack of 50)
£1.184(exc. VAT)
Better World
  • RS Stock No. 221-1153
  • Mfr. Part No. LV429235
Each
£45.58(exc. VAT)
  • RS Stock No. 188-4625
Each
£15.03(exc. VAT)
Better World
  • RS Stock No. 124-7741
  • Mfr. Part No. 5SV3644-6
Each
£129.94(exc. VAT)
  • RS Stock No. 176-9636
  • Mfr. Part No. F204F-40/0.03
Each
£661.24(exc. VAT)
  • RS Stock No. 261-2881
  • Mfr. Part No. 140G-G-UVB
Each
£136.34(exc. VAT)
Better World
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  • Mfr. Part No. 5SY6513-6
Each
£46.06(exc. VAT)
  • RS Stock No. 266-9578
  • Mfr. Part No. 5SY1702-4
Each
£27.24(exc. VAT)
  • RS Stock No. 599-473
  • Mfr. Part No. 2CDS281103R0165
Each
£134.25(exc. VAT)
  • RS Stock No. 259-3758
  • Mfr. Part No. 1SDA071753R1
Each
£14,329.78(exc. VAT)
  • RS Stock No. 133-007
  • Mfr. Part No. 184193 IZMX-SH404-1
Each
£375.35(exc. VAT)
  • RS Stock No. 254-4113
  • Mfr. Part No. PF-FB1-160
Each (In a Box of 10)
£81.154(exc. VAT)
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  • Mfr. Part No. DCT3-2
Each
£18.20(exc. VAT)
  • RS Stock No. 258-772
  • Mfr. Part No. 278937 FAZ-B2/3N
Each
£145.41(exc. VAT)
  • RS Stock No. 173-8121
  • Mfr. Part No. 3403.0174.24
1 Reel of 2000
£1,101.04(exc. VAT)
  • RS Stock No. 230-926
  • Mfr. Part No. 107657 NZMB2-S26-BT-CNA
Each
£497.45(exc. VAT)
  • RS Stock No. 144-282
  • Mfr. Part No. 78623728 EVG-16/3PHAS/6MODUL+ZV-BS-G+FAZ-XK25
Each
£18.93(exc. VAT)
Better World
  • RS Stock No. 209-7510
  • Mfr. Part No. 5SV6016-6GV13
Each (In a Pack of 12)
£150.096(exc. VAT)
  • RS Stock No. 769-4602
  • Mfr. Part No. 239104 FAZ6-C20/2
Each
£52.94(exc. VAT)
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