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

407 of 999+
  • RS Stock No. 260-8162
  • Mfr. Part No. C40V45E400
Each
£4,746.14(exc. VAT)
  • RS Stock No. 173-7895
  • Mfr. Part No. 8020.0517.PT
1 Box of 1000
£247.42(exc. VAT)
  • RS Stock No. 245-9240
  • Mfr. Part No. SF-1206SA1000R-2
Each (On a Tape of 10)
£0.69(exc. VAT)
  • RS Stock No. 357-452
  • Mfr. Part No. A9L16312
Each
£117.74(exc. VAT)
  • RS Stock No. 712-4793P
  • Mfr. Part No. 0091.0001
Each (Supplied in a Box)
£12.96(exc. VAT)
  • RS Stock No. 347-098
  • Mfr. Part No. C125N360FM
Each
£12,206.74(exc. VAT)
  • RS Stock No. 269-3872
  • Mfr. Part No. 8020.5067
Each
£0.63(exc. VAT)
  • RS Stock No. 893-0580
  • Mfr. Part No. 696107003002
Each (In a Pack of 10)
£0.564(exc. VAT)
  • RS Stock No. 110-265
  • Mfr. Part No. M9F21113
Each
£27.66(exc. VAT)
  • RS Stock No. 200-261
  • Mfr. Part No. 2CDS381001R0044
Each
£33.49(exc. VAT)
  • RS Stock No. 120-619
  • Mfr. Part No. 168492 NZMN3-S500-SVE
Each
£2,330.73(exc. VAT)
  • RS Stock No. 221-3636
Each
£11.74(exc. VAT)
  • RS Stock No. 269-8329
  • Mfr. Part No. 3NC8423-0C
Each (In a Pack of 3)
£256.127(exc. VAT)
  • RS Stock No. 144-4887
  • Mfr. Part No. CDC140F
Each
£185.70(exc. VAT)
  • RS Stock No. 435-475
  • Mfr. Part No. 2CCG001220R0001
Each
£289.81(exc. VAT)
Better World
  • RS Stock No. 191-6111
  • Mfr. Part No. A9P24625
Each
£96.05(exc. VAT)
  • RS Stock No. 131-428
  • Mfr. Part No. 2906002
Each
£175.28(exc. VAT)
  • RS Stock No. 746-8197
  • Mfr. Part No. 2CDS273001R0501 S203M-D50
Each
£98.60(exc. VAT)
  • RS Stock No. 173-7771
  • Mfr. Part No. 3413.0214.22
1 Reel of 1000
£246.10(exc. VAT)
  • RS Stock No. 218-8831
  • Mfr. Part No. 1492-SPM3B300
Each
£64.32(exc. VAT)
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