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

587 of 999+
  • RS Stock No. 177-5067
  • Mfr. Part No. 2CSF202199R1800 F202 A-80/0,03 110V
Each
£204.93(exc. VAT)
Better World
  • RS Stock No. 247-2146
  • Mfr. Part No. MGPCM6R
Each
£912.48(exc. VAT)
Better World
  • RS Stock No. 221-1290
  • Mfr. Part No. LV438337
Each
£290.35(exc. VAT)
  • RS Stock No. 242-997
  • Mfr. Part No. 190834 FAZ-D10/4-NA
Each
£232.99(exc. VAT)
  • RS Stock No. 263-718
  • Mfr. Part No. 3VA9674-0JJ43
1 Kit
£315.20(exc. VAT)
Better World
  • RS Stock No. 200-6169
  • Mfr. Part No. A9PA2616
Each
£41.51(exc. VAT)
  • RS Stock No. 200-280
  • Mfr. Part No. 2CDS381001R0501
Each
£48.33(exc. VAT)
  • RS Stock No. 610-9563
Each (In a Pack of 10)
£0.756(exc. VAT)
  • RS Stock No. 599-637
  • Mfr. Part No. 2CSR255188R1104
Each
£263.12(exc. VAT)
  • RS Stock No. 602-229
  • Mfr. Part No. ADF820F
Each
£282.57(exc. VAT)
Better World
  • RS Stock No. 214-2063
  • Mfr. Part No. M9F11204
Each
£90.52(exc. VAT)
  • RS Stock No. 445-0689
  • Mfr. Part No. 1SAM201908R1001 BS1-3
Each
£1.34(exc. VAT)
Better World
  • RS Stock No. 218-1788
  • Mfr. Part No. 3VA9114-0JB11
Each
£20.61(exc. VAT)
Better World
  • RS Stock No. 248-3822
  • Mfr. Part No. LV848393
Each
£2,255.84(exc. VAT)
  • RS Stock No. 246-088
  • Mfr. Part No. 138369 AKP3600
1 Pack of 3
£377.58(exc. VAT)
  • RS Stock No. 183-3664
  • Mfr. Part No. 2CDS244701R0104
Each
£68.28(exc. VAT)
  • RS Stock No. 869-7416
  • Mfr. Part No. TRF250-120
Each (In a Bag of 10)
£0.67(exc. VAT)
  • RS Stock No. 237-5066
  • Mfr. Part No. 2CSR253001R1165
Each
£248.30(exc. VAT)
  • RS Stock No. 221-5637
  • Mfr. Part No. 3-128-240
Each
£16.16(exc. VAT)
  • RS Stock No. 249-9512
  • Mfr. Part No. 2801165
Each
£57.74(exc. VAT)
Results per page