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. 182-1810
  • Mfr. Part No. FNQ-12
Each
£37.99(exc. VAT)
  • RS Stock No. 339-646
  • Mfr. Part No. SEB48S12125
Each
£3,734.54(exc. VAT)
  • RS Stock No. 341-508
  • Mfr. Part No. C10F6TM025
Each
£836.51(exc. VAT)
Better World
  • RS Stock No. 790-9373
  • Mfr. Part No. A9D11845
Each
£148.47(exc. VAT)
  • RS Stock No. 211-0182
  • Mfr. Part No. 5SD7414-2
Each
£639.72(exc. VAT)
  • RS Stock No. 288-1515
  • Mfr. Part No. LV833857SP
Each
£108.76(exc. VAT)
  • RS Stock No. 610-3414
  • Mfr. Part No. 2CSB203101R4250 - DDA203A-25/0,5
Each
£99.94(exc. VAT)
  • RS Stock No. 250-4415
  • Mfr. Part No. 1SCA022697R6250
1 Box of 3
£43.83(exc. VAT)
Better World
  • RS Stock No. 236-6578
  • Mfr. Part No. 1SDA068061R1 XT3N 250 TMD 80A FF
Each
£641.57(exc. VAT)
  • RS Stock No. 263-471
  • Mfr. Part No. 500NHG3BI-400
1 Pack of 3
£56.71(exc. VAT)
  • RS Stock No. 246-2645
  • Mfr. Part No. 2CCS573001R0277
Each
£119.76(exc. VAT)
  • RS Stock No. 246-2616
  • Mfr. Part No. 2CCS572001R1138
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£133.60(exc. VAT)
  • RS Stock No. 117-040
  • Mfr. Part No. KV 8354
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£229.88(exc. VAT)
  • RS Stock No. 486-823
  • Mfr. Part No. 236101 PXL-D20/1
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£17.68(exc. VAT)
  • RS Stock No. 228-921
  • Mfr. Part No. C22G80
1 Pack of 10
£27.98(exc. VAT)
  • RS Stock No. 228-713
  • Mfr. Part No. AAO4
1 Pack of 20
£181.49(exc. VAT)
  • RS Stock No. 229-458
  • Mfr. Part No. 109681 NZMN3-S320
Each
£1,648.81(exc. VAT)
  • RS Stock No. 263-283
  • Mfr. Part No. 315NHG03BI-400
1 Pack of 3
£40.67(exc. VAT)
  • RS Stock No. 125-1477
  • Mfr. Part No. 1492-SPM2C400
Each
£52.14(exc. VAT)
Better World
  • RS Stock No. 232-0271
  • Mfr. Part No. 1SDA068126R1 XT4N 250 Ekip LS/I 250A FF
Each
£789.40(exc. VAT)
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