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.

50907 Products showing for Fuses & Circuit Breakers

547 of 999+
  • RS Stock No. 703-8715P
  • Mfr. Part No. 250NHG1B
Each (Supplied in a Box)
£7.65(exc. VAT)
Better World
  • RS Stock No. 221-1166
  • Mfr. Part No. LV429267
Each
£214.67(exc. VAT)
Better World
  • RS Stock No. 212-1664
  • Mfr. Part No. 2CDS254280R0164
Each
£119.17(exc. VAT)
  • RS Stock No. 218-1778
  • Mfr. Part No. 3VA9111-0WD40
Each
£14.81(exc. VAT)
  • RS Stock No. 847-3566
  • Mfr. Part No. FAZ-D25/3-NA
Each
£102.14(exc. VAT)
Better World
  • RS Stock No. 269-973
  • Mfr. Part No. 3VA6110-6KT41-0AA0
Each
£1,439.65(exc. VAT)
  • RS Stock No. 260-723
  • Mfr. Part No. BK/HLT
1 Pack of 672
£5,575.51(exc. VAT)
  • RS Stock No. 230-3503
  • Mfr. Part No. G217172
Each (In a Pack of 10)
£1.428(exc. VAT)
Better World
  • RS Stock No. 221-1156
  • Mfr. Part No. LV429242
Each
£22.11(exc. VAT)
  • RS Stock No. 357-462
  • Mfr. Part No. BGF16090
Each
£302.82(exc. VAT)
  • RS Stock No. 141-127
  • Mfr. Part No. 2CCS861001R1635
Each
£119.89(exc. VAT)
  • RS Stock No. 624-3152P
  • Mfr. Part No. NANOSMDC075F-2
Each (Supplied on a Reel)
£0.316(exc. VAT)
  • RS Stock No. 282-7113
  • Mfr. Part No. 259527 NZM2/3-XUV
Each
£139.63(exc. VAT)
  • RS Stock No. 221-3714
Each (In a Pack of 10)
£9.643(exc. VAT)
  • RS Stock No. 147-877
  • Mfr. Part No. 3VA5212-6ED41-2AA0
Each
£1,013.43(exc. VAT)
  • RS Stock No. 490-276
  • Mfr. Part No. 236225 PXL-B6/2
Each
£39.44(exc. VAT)
  • RS Stock No. 260-9419
  • Mfr. Part No. C10B4TM100
Each
£647.76(exc. VAT)
  • RS Stock No. 438-829
  • Mfr. Part No. KDR35165
Each
£319.80(exc. VAT)
  • RS Stock No. 339-790
  • Mfr. Part No. SEE145C03
Each
£137.42(exc. VAT)
  • RS Stock No. 245-141
  • Mfr. Part No. A9D06832
Each
£166.42(exc. VAT)
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