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.

50914 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 738-2889P
  • Mfr. Part No. 0154.500DRT
Each (Supplied on a Reel)
£3.342(exc. VAT)
Better World
  • RS Stock No. 270-4097
  • Mfr. Part No. 3VA2116-7HN36-0AA0
Each
£970.58(exc. VAT)
  • RS Stock No. 622-1174
  • Mfr. Part No. 5SH4163
Each (In a Pack of 10)
£2.156(exc. VAT)
  • RS Stock No. 610-501
  • Mfr. Part No. 5SY4440-5
Each
£293.32(exc. VAT)
Better World
  • RS Stock No. 271-9581
  • Mfr. Part No. 3VA10322ED420AA0
Each
£190.02(exc. VAT)
Better World
  • RS Stock No. 328-341
  • Mfr. Part No. 5SL6004-7KL
Each
£55.32(exc. VAT)
  • RS Stock No. 247-1903
  • Mfr. Part No. 48527
Each
£1,612.52(exc. VAT)
Better World
  • RS Stock No. 214-2081
  • Mfr. Part No. M9F17306
Each
£142.41(exc. VAT)
  • RS Stock No. 703-8642P
  • Mfr. Part No. 40NHG000B
Each (Supplied in a Box)
£4.21(exc. VAT)
  • RS Stock No. 532-5152
  • Mfr. Part No. 278810 FAZ-S10/2
Each
£61.53(exc. VAT)
  • RS Stock No. 608-664
  • Mfr. Part No. 3NH5463
1 Pack of 3
£96.83(exc. VAT)
  • RS Stock No. 101-785
Each
£42.03(exc. VAT)
  • RS Stock No. 183-2860
  • Mfr. Part No. KV9224M
Each
£155.81(exc. VAT)
  • RS Stock No. 289-0551
  • Mfr. Part No. 106-P30-1,5A
Each
£13.03(exc. VAT)
  • RS Stock No. 852-7162
  • Mfr. Part No. MDL-7-R
Each
£0.73(exc. VAT)
Better World
  • RS Stock No. 201-2236
  • Mfr. Part No. A9DC3616
Each
£191.26(exc. VAT)
Better World
  • RS Stock No. 219-8874
  • Mfr. Part No. KBC10DCB20
Each (In a Pack of 10)
£9.444(exc. VAT)
  • RS Stock No. 156-860
  • Mfr. Part No. 3RV1908-0P
Each (In a Pack of 10)
£0.944(exc. VAT)
  • RS Stock No. 270-3132
  • Mfr. Part No. W228455
Each
£15.07(exc. VAT)
  • RS Stock No. 895-1631P
  • Mfr. Part No. 1812L050/30PR
Each (Supplied on a Reel)
£0.76(exc. VAT)
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