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. 611-0737
Each (In a Pack of 10)
£0.756(exc. VAT)
  • RS Stock No. 181-8575
  • Mfr. Part No. 160NHG1B
1 Box of 3
£21.14(exc. VAT)
  • RS Stock No. 847-3487
  • Mfr. Part No. 102187 FAZ-D10/2-NA
Each
£87.50(exc. VAT)
Better World
  • RS Stock No. 157-048
  • Mfr. Part No. 3VA2140-8KQ32-0AA0
Each
£1,225.93(exc. VAT)
  • RS Stock No. 270-2188
  • Mfr. Part No. 1154911
Each
£167.04(exc. VAT)
  • RS Stock No. 122-372
  • Mfr. Part No. LV510507P
Each
£179.57(exc. VAT)
  • RS Stock No. 257-229
  • Mfr. Part No. 3VA5340-5EC61-0AA0
Each
£1,022.91(exc. VAT)
  • RS Stock No. 176-9636
  • Mfr. Part No. F204F-40/0.03
Each
£661.24(exc. VAT)
  • RS Stock No. 181-8772
  • Mfr. Part No. 100NHG00B-690
Each
£6.60(exc. VAT)
  • RS Stock No. 269-3823
  • Mfr. Part No. 4430.0130
Each
£1.88(exc. VAT)
Better World
  • RS Stock No. 212-8936
  • Mfr. Part No. 5SL6308-7
Each
£65.90(exc. VAT)
  • RS Stock No. 339-778
  • Mfr. Part No. BDL16020
Each
£205.04(exc. VAT)
  • RS Stock No. 212-011
  • Mfr. Part No. M9F12110
Each
£37.95(exc. VAT)
  • RS Stock No. 144-4696
  • Mfr. Part No. MZN175
Each (In a Pack of 2)
£17.625(exc. VAT)
  • RS Stock No. 226-1629
  • Mfr. Part No. 5SD7481-1
Each
£372.58(exc. VAT)
  • RS Stock No. 610-423
  • Mfr. Part No. 5SY4301-5
Each
£154.99(exc. VAT)
  • RS Stock No. 377-0617
  • Mfr. Part No. Y216612
Each (In a Pack of 5)
£10.85(exc. VAT)
Better World
  • RS Stock No. 178-8164
  • Mfr. Part No. LV426269
Each
£477.75(exc. VAT)
  • RS Stock No. 263-718
  • Mfr. Part No. 3VA9674-0JJ43
1 Kit
£315.20(exc. VAT)
  • RS Stock No. 729-2830
  • Mfr. Part No. 3600-P10-SI-0.5A
Each
£64.86(exc. VAT)
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