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. 211-2419
  • Mfr. Part No. M9F42225
Each
£127.77(exc. VAT)
  • RS Stock No. 245-090
  • Mfr. Part No. A9D56840
Each
£157.12(exc. VAT)
  • RS Stock No. 703-8800
  • Mfr. Part No. 250NHG1B-690
Each
£11.34(exc. VAT)
  • RS Stock No. 209-9405
  • Mfr. Part No. 3-122-716
Each (In a Pack of 100)
£1.796(exc. VAT)
  • RS Stock No. 173-9803
  • Mfr. Part No. 0034.6618
Each (In a Bag of 100)
£0.336(exc. VAT)
  • RS Stock No. 228-985
  • Mfr. Part No. 20D27
1 Pack of 5
£4.56(exc. VAT)
Better World
  • RS Stock No. 874-4332
  • Mfr. Part No. 3VA1163-4ED36-0AA0
Each
£191.69(exc. VAT)
  • RS Stock No. 630-859
  • Mfr. Part No. C095567Q
1 Box of 10
£8.80(exc. VAT)
  • RS Stock No. 225-5958
  • Mfr. Part No. 2CCF019639R0001 S803PV-SD125
Each
£447.11(exc. VAT)
Better World
  • RS Stock No. 282-6511
  • Mfr. Part No. PV-200A-1XL-B-15
Each
£359.80(exc. VAT)
  • RS Stock No. 232-0192
  • Mfr. Part No. 1SDA066480R1 RHE XT2-XT4 W
Each
£125.30(exc. VAT)
  • RS Stock No. 231-9585
  • Mfr. Part No. 2CCS893001R0164 S803N C 16A - 36 KA
Each
£183.14(exc. VAT)
  • RS Stock No. 769-0035
  • Mfr. Part No. 021906.3MXABP
Each (In a Pack of 10)
£0.952(exc. VAT)
  • RS Stock No. 816-8959
  • Mfr. Part No. R090543
Each (In a Pack of 10)
£0.444(exc. VAT)
  • RS Stock No. 611-0018
Each (In a Pack of 10)
£0.409(exc. VAT)
  • RS Stock No. 231-9363
  • Mfr. Part No. 1SDA104922R1 M XT7M 220-250 V AC/DC
Each
£621.02(exc. VAT)
  • RS Stock No. 273-2321
  • Mfr. Part No. 140MT-C-W454
Each
£14.08(exc. VAT)
  • RS Stock No. 768-1139
  • Mfr. Part No. 2800929
Each
£11.56(exc. VAT)
  • RS Stock No. 247-2885
  • Mfr. Part No. S1027334
1 Box of 10
£216.89(exc. VAT)
  • RS Stock No. 624-0361
  • Mfr. Part No. 278564 FAZ-C32/1
Each
£22.85(exc. VAT)
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