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

605 of 999+
Better World
  • RS Stock No. 806-7206
  • Mfr. Part No. A9V03663
Each
£225.84(exc. VAT)
  • RS Stock No. 212-142
  • Mfr. Part No. R9F24132
Each
£35.85(exc. VAT)
  • RS Stock No. 179-3001
  • Mfr. Part No. 2122910000
1 Box of 10
£17.17(exc. VAT)
  • RS Stock No. 250-4149
  • Mfr. Part No. 1SDA054420R1
Each
£3,311.58(exc. VAT)
Better World
  • RS Stock No. 259-9894
  • Mfr. Part No. 1SDA070727R1
Each
£6,603.36(exc. VAT)
  • RS Stock No. 246-2513
  • Mfr. Part No. 2CCS571001R1208
Each
£63.93(exc. VAT)
  • RS Stock No. 852-7039
  • Mfr. Part No. MDA-1-1-2-R
Each
£4.85(exc. VAT)
  • RS Stock No. 232-0150
  • Mfr. Part No. 1SDA062104R1 AUX-C T7 1Q+1SY 400VAC
Each
£63.45(exc. VAT)
Better World
  • RS Stock No. 202-7234
  • Mfr. Part No. 5SL6510-6
Each
£44.18(exc. VAT)
  • RS Stock No. 282-6200
  • Mfr. Part No. FWE-300A
Each
£255.27(exc. VAT)
  • RS Stock No. 130-733
  • Mfr. Part No. A9D55420
Each
£574.80(exc. VAT)
  • RS Stock No. 342-0198
  • Mfr. Part No. 255.0808.0001
Each
£7.22(exc. VAT)
  • RS Stock No. 249-210
  • Mfr. Part No. 3VA6610-7KL32-0AA0
Each
£5,523.74(exc. VAT)
  • RS Stock No. 289-1631
  • Mfr. Part No. 2CTB803872R1100
Each
£114.49(exc. VAT)
  • RS Stock No. 230-1106
  • Mfr. Part No. 109131 PLGC4-C20/1N
Each
£10.30(exc. VAT)
Better World
  • RS Stock No. 224-7890
  • Mfr. Part No. 3VA1180-5GF42-0AA0
Each
£323.73(exc. VAT)
  • RS Stock No. 221-3657
Each
£15.36(exc. VAT)
  • RS Stock No. 611-9302
Each (In a Pack of 10)
£0.211(exc. VAT)
  • RS Stock No. 132-516
  • Mfr. Part No. 184142 IZMX-PXR-PTM-1
Each
£1,047.38(exc. VAT)
Better World
  • RS Stock No. 539-8194
  • Mfr. Part No. 2CDS211001R0405 SH201-B40
Each
£14.75(exc. VAT)
Results per page