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. 435-548
  • Mfr. Part No. 2CCS800900R0211 S800-SOR250
Each
£84.77(exc. VAT)
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  • Mfr. Part No. 12TXLEJ200
Each
£525.96(exc. VAT)
  • RS Stock No. 221-1184
  • Mfr. Part No. LV429305
Each
£123.14(exc. VAT)
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  • Mfr. Part No. 1SDA100424R1 XT5S 400 EkipDip LS/I 400
Each
£664.53(exc. VAT)
Better World
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  • Mfr. Part No. GV5P220H
Each
£918.26(exc. VAT)
Better World
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  • Mfr. Part No. A9N61511
Each
£48.16(exc. VAT)
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  • Mfr. Part No. B00004A0021Y
Each
£2.33(exc. VAT)
Better World
  • RS Stock No. 746-7983
  • Mfr. Part No. 2CDS252001R0337 S202-K4
Each
£68.06(exc. VAT)
  • RS Stock No. 279-4103
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Each
£203.84(exc. VAT)
  • RS Stock No. 254-543
  • Mfr. Part No. 265910 NZMN4-4-AE800/500
Each
£4,786.56(exc. VAT)
  • RS Stock No. 265-0184
Each
£19.99(exc. VAT)
  • RS Stock No. 246-2577
  • Mfr. Part No. 2CCS572001R0317
Each
£78.23(exc. VAT)
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  • Mfr. Part No. PCT120SJ
Each
£1,085.86(exc. VAT)
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  • Mfr. Part No. 3412.0124.22
Each
£0.63(exc. VAT)
  • RS Stock No. 262-398
  • Mfr. Part No. 63ENSFBS
1 Pack of 5
£188.66(exc. VAT)
Better World
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  • Mfr. Part No. 2CDS251281R0104
Each
£40.88(exc. VAT)
Better World
  • RS Stock No. 211-2366
  • Mfr. Part No. M9F22201
Each
£98.48(exc. VAT)
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  • Mfr. Part No. 2CSR275051R1164 DSE201 M C16 AC30 - N Blue
Each
£122.57(exc. VAT)
  • RS Stock No. 169-9418
  • Mfr. Part No. S506-2-R
1 Bag of 1000
£145.50(exc. VAT)
Better World
  • RS Stock No. 202-7107
  • Mfr. Part No. 5SL4116-6
Each
£17.98(exc. VAT)
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