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

372 of 999+
  • RS Stock No. 270-3137
  • Mfr. Part No. X228502
Each
£43.02(exc. VAT)
Better World
  • RS Stock No. 212-1655
  • Mfr. Part No. 2CDS254280R0024
Each
£131.10(exc. VAT)
  • RS Stock No. 188-4625
Each
£15.03(exc. VAT)
  • RS Stock No. 231-694
  • Mfr. Part No. 120673 mRB6-6/3N/D/01-A
Each
£377.55(exc. VAT)
  • RS Stock No. 259-4014
  • Mfr. Part No. 1SDA072073R1
Each
£4,421.14(exc. VAT)
  • RS Stock No. 765-2942
  • Mfr. Part No. SD00-D
Each
£9.06(exc. VAT)
Better World
  • RS Stock No. 211-9722
  • Mfr. Part No. 5SV3742-6
Each
£128.36(exc. VAT)
  • RS Stock No. 868-9042
  • Mfr. Part No. 4430.0034
Each (In a Pack of 20)
£17.805(exc. VAT)
  • RS Stock No. 210-2126
  • Mfr. Part No. ESX10-TA-100-DC24V-4A-E
Each
£73.37(exc. VAT)
  • RS Stock No. 250-074
  • Mfr. Part No. 3VA6580-7KQ32-0AA0
Each
£4,402.32(exc. VAT)
  • RS Stock No. 260-7775
  • Mfr. Part No. C16H34V100
Each
£2,183.04(exc. VAT)
  • RS Stock No. 269-3786
  • Mfr. Part No. 0031.8265
Each
£0.99(exc. VAT)
  • RS Stock No. 127-747
  • Mfr. Part No. 183481 IZMX16H3-P10W-1
Each
£6,858.81(exc. VAT)
  • RS Stock No. 260-9476
  • Mfr. Part No. C10H4TM025
Each
£767.13(exc. VAT)
  • RS Stock No. 140-954
  • Mfr. Part No. 2CCS572001R0064
Each
£82.98(exc. VAT)
  • RS Stock No. 140-589
  • Mfr. Part No. 2CCS894001R0255
Each
£239.35(exc. VAT)
  • RS Stock No. 201-0751
  • Mfr. Part No. DDB125PIR08
Each
£195.82(exc. VAT)
  • RS Stock No. 627-231
  • Mfr. Part No. 8PQ4000-0BA63
Each
£30.84(exc. VAT)
Better World
  • RS Stock No. 202-7065
  • Mfr. Part No. 5SV3344-3
Each
£179.65(exc. VAT)
  • RS Stock No. 376-6618
  • Mfr. Part No. FX0458/1
Each (In a Pack of 5)
£4.336(exc. VAT)
Results per page