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

331 of 999+
  • RS Stock No. 242-993
  • Mfr. Part No. 190786 FAZ-C63/2-NA
Each
£205.78(exc. VAT)
  • RS Stock No. 231-9326
  • Mfr. Part No. 1SDA075871R1 KIT FC Cu XT1 14-1/0 AWG 6
Each
£32.01(exc. VAT)
  • RS Stock No. 231-9891
  • Mfr. Part No. 2CSB203001R2630 DDA203 AC-63/0.1
Each
£145.54(exc. VAT)
  • RS Stock No. 203-847
  • Mfr. Part No. 2CDS271337R0034
Each
£45.50(exc. VAT)
  • RS Stock No. 270-4831
  • Mfr. Part No. 3VA2563-7KQ42-0AA0
Each
£3,718.88(exc. VAT)
  • RS Stock No. 231-9707
  • Mfr. Part No. 2CDS271065R0457 S201MT-K15
1 Box of 1
£102.87(exc. VAT)
  • RS Stock No. 122-5259
  • Mfr. Part No. 57010015
Each (In a Pack of 12)
£6.058(exc. VAT)
  • RS Stock No. 340-873
  • Mfr. Part No. BJF46125
Each
£1,168.36(exc. VAT)
  • RS Stock No. 486-924
  • Mfr. Part No. 236104 PXL-D40/1
Each
£21.81(exc. VAT)
  • RS Stock No. 188-6524
  • Mfr. Part No. Y084017
Each (In a Pack of 10)
£3.073(exc. VAT)
  • RS Stock No. 610-692
  • Mfr. Part No. 5SY7508-8
Each
£80.41(exc. VAT)
  • RS Stock No. 825-6147
  • Mfr. Part No. P2MB1PC080
Each
£63.33(exc. VAT)
Better World
  • RS Stock No. 238-3406
  • Mfr. Part No. A9P34720
Each
£178.89(exc. VAT)
  • RS Stock No. 628-8076
  • Mfr. Part No. 266005 PN2-160
1 Box of 1
£372.57(exc. VAT)
  • RS Stock No. 852-6941
  • Mfr. Part No. HTB-44I-R
Each
£4.21(exc. VAT)
  • RS Stock No. 247-2967
  • Mfr. Part No. Z201295
1 Box of 10
£13.85(exc. VAT)
Better World
  • RS Stock No. 220-1341
  • Mfr. Part No. M9A26946
Each
£85.00(exc. VAT)
Better World
  • RS Stock No. 219-9035
  • Mfr. Part No. DF2BA0400
Each (In a Pack of 10)
£12.706(exc. VAT)
  • RS Stock No. 245-9196
  • Mfr. Part No. SF-0603SPA100R-2
Each (On a Reel of 5000)
£0.44(exc. VAT)
  • RS Stock No. 273-2298
  • Mfr. Part No. 140MT-C-PEK12
Each
£9.32(exc. VAT)
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