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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Better World
  • RS Stock No. 790-9342
  • Mfr. Part No. A9D10832
Each
£176.61(exc. VAT)
  • RS Stock No. 182-1458
  • Mfr. Part No. TMF400M450
Each
£211.13(exc. VAT)
  • RS Stock No. 831-9197
  • Mfr. Part No. 1SDA066325R1
Each
£92.25(exc. VAT)
Better World
  • RS Stock No. 209-6483
  • Mfr. Part No. 5SL4306-8
Each
£98.13(exc. VAT)
  • RS Stock No. 881-0830
  • Mfr. Part No. CA1-B0-34-630-121-C
Each
£25.54(exc. VAT)
Better World
  • RS Stock No. 211-0491
  • Mfr. Part No. KSB100SF5
Each
£288.25(exc. VAT)
  • RS Stock No. 225-8216
  • Mfr. Part No. BK-HVP-HH-R
1 Bag of 100
£439.47(exc. VAT)
  • RS Stock No. 181-8755
  • Mfr. Part No. ESD10
Each
£6.52(exc. VAT)
  • RS Stock No. 122-443
  • Mfr. Part No. EA9ZGQ263
Each
£43.91(exc. VAT)
  • RS Stock No. 725-8029
  • Mfr. Part No. 0213.315MXP
Each (In a Bag of 10)
£0.866(exc. VAT)
  • RS Stock No. 854-8989
  • Mfr. Part No. LPJ-5SP
Each
£34.32(exc. VAT)
  • RS Stock No. 259-021
  • Mfr. Part No. 278906 FAZ-K4/3
Each
£147.11(exc. VAT)
  • RS Stock No. 865-7364
  • Mfr. Part No. 0034.2513
Each (In a Pack of 10)
£0.981(exc. VAT)
  • RS Stock No. 288-1496
  • Mfr. Part No. LV429449
Each
£98.75(exc. VAT)
Better World
  • RS Stock No. 212-0259
  • Mfr. Part No. LV432111
Each
£1,947.44(exc. VAT)
  • RS Stock No. 899-0960
  • Mfr. Part No. 2621009
Each (In a Pack of 10)
£2.223(exc. VAT)
  • RS Stock No. 627-354
  • Mfr. Part No. 8PQ6000-7BA05
Each
£407.19(exc. VAT)
  • RS Stock No. 266-3132
  • Mfr. Part No. 0 143 06
1 Box of 10
£31.34(exc. VAT)
  • RS Stock No. 219-9174
  • Mfr. Part No. M9U21104
Each
£43.77(exc. VAT)
  • RS Stock No. 263-880
  • Mfr. Part No. 3VA9143-0KP10
1 Kit
£96.23(exc. VAT)
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