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

13 of 999+
  • RS Stock No. 231-9590
  • Mfr. Part No. 2CDE282001R0100 E202/100r
1 Box of 1
£37.49(exc. VAT)
  • RS Stock No. 209-9276
1 Pack of 10
£10.20(exc. VAT)
  • RS Stock No. 186-3471
  • Mfr. Part No. 2CSS245102R0104
Each
£10.02(exc. VAT)
  • RS Stock No. 405-9141
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-10A
Each
£23.00(exc. VAT)
  • RS Stock No. 521-2494
Each (In a Pack of 5)
£3.516(exc. VAT)
  • RS Stock No. 121-6863
Each
£9.65(exc. VAT)
  • RS Stock No. 266-1307
  • Mfr. Part No. 406863
Each
£46.81(exc. VAT)
  • RS Stock No. 231-9636
  • Mfr. Part No. 2CDL220001R1612 PS2/12/16
1 Box of 1
£16.48(exc. VAT)
  • RS Stock No. 179-3077
  • Mfr. Part No. 83230003 / SP23-20K275V-LF
Each
£29.60(exc. VAT)
  • RS Stock No. 229-180
  • Mfr. Part No. C10G8 CYLINDRICAL FUSE 10 x 38 8A GG 500V AC
1 Pack of 10
£6.85(exc. VAT)
  • RS Stock No. 798-2202
  • Mfr. Part No. EUB116B
Each
£4.00(exc. VAT)
  • RS Stock No. 415-317
  • Mfr. Part No. BAO40
Each
£13.98(exc. VAT)
  • RS Stock No. 413-355
  • Mfr. Part No. AAO20
Each (In a Pack of 5)
£8.742(exc. VAT)
  • RS Stock No. 611-0030
1 Pack of 10
£4.17(exc. VAT)
  • RS Stock No. 703-8368
  • Mfr. Part No. C10G1
1 Pack of 10
£10.78(exc. VAT)
Better World
  • RS Stock No. 219-9120
  • Mfr. Part No. M9F22116
Each
£28.01(exc. VAT)
  • RS Stock No. 706-1939
  • Mfr. Part No. 3RV2902-1AP0
Each
£29.39(exc. VAT)
Better World
  • RS Stock No. 188-1216
  • Mfr. Part No. NSYEB156D6
Each (In a Pack of 10)
£3.182(exc. VAT)
  • RS Stock No. 563-762
Each (In a Pack of 10)
£0.377(exc. VAT)
  • RS Stock No. 811-1909
  • Mfr. Part No. 1SL1205A00 65P18X22
Each
£90.26(exc. VAT)
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