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.

51028 Products showing for Fuses & Circuit Breakers

13 of 999+
  • RS Stock No. 228-662
  • Mfr. Part No. C10G4
1 Pack of 10
£6.85(exc. VAT)
  • RS Stock No. 537-0966
  • Mfr. Part No. S500-10-R
1 Pack of 10
£1.92(exc. VAT)
Better World
  • RS Stock No. 219-9114
  • Mfr. Part No. M9F22102
Each
£28.38(exc. VAT)
  • RS Stock No. 265-0206
Each
£28.37(exc. VAT)
  • RS Stock No. 488-6836
  • Mfr. Part No. 2CDS251001R0104 - S201C10
Each
£16.45(exc. VAT)
  • RS Stock No. 563-766
Each (In a Pack of 10)
£0.377(exc. VAT)
  • RS Stock No. 537-1379
  • Mfr. Part No. S506-1-R
Each (In a Pack of 10)
£0.208(exc. VAT)
  • RS Stock No. 265-0209
Each
£28.37(exc. VAT)
  • RS Stock No. 787-4237
  • Mfr. Part No. 029707.5L
Each (In a Pack of 5)
£0.416(exc. VAT)
  • RS Stock No. 521-2573
Each (In a Pack of 5)
£4.594(exc. VAT)
  • RS Stock No. 273-0882
  • Mfr. Part No. 1658-G21-02-P10-15A
Each
£4.86(exc. VAT)
  • RS Stock No. 521-2589
Each (In a Pack of 5)
£4.622(exc. VAT)
Better World
  • RS Stock No. 400-2000
  • Mfr. Part No. GV2G445
Each
£20.71(exc. VAT)
  • RS Stock No. 415-193
  • Mfr. Part No. TIA32M40
Each (In a Pack of 5)
£11.818(exc. VAT)
  • RS Stock No. 413-478
  • Mfr. Part No. NSD4
Each (In a Pack of 5)
£6.874(exc. VAT)
  • RS Stock No. 791-2773
  • Mfr. Part No. A9A26981
Each (In a Pack of 20)
£1.447(exc. VAT)
Better World
  • RS Stock No. 776-2831
  • Mfr. Part No. A9XPT920
Each
£14.52(exc. VAT)
  • RS Stock No. 184-9055
  • Mfr. Part No. CPB1063D3
Each
£17.63(exc. VAT)
  • RS Stock No. 277-3909
Each (In a Pack of 5)
£1.722(exc. VAT)
  • RS Stock No. 700-0818
  • Mfr. Part No. EN20
1 Pack of 6
£25.00(exc. VAT)
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