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

362 of 999+
  • RS Stock No. 203-722
  • Mfr. Part No. 2CDS253001R0578
Each
£163.59(exc. VAT)
  • RS Stock No. 181-8450
  • Mfr. Part No. SMD25
1 Box of 20
£105.85(exc. VAT)
  • RS Stock No. 125-1497
  • Mfr. Part No. 1492-SPM1D050
Each
£19.92(exc. VAT)
  • RS Stock No. 228-849
  • Mfr. Part No. C22M100 CYLINDRICAL FUSE 22 x 58 100A AM 500V AC
1 Pack of 10
£34.21(exc. VAT)
  • RS Stock No. 647-8415
  • Mfr. Part No. MF-R010
Each (In a Pack of 10)
£0.21(exc. VAT)
Better World
  • RS Stock No. 231-9724
  • Mfr. Part No. 2CDS272001R0061 S202M D 6A - 15 KA
1 Box of 1
£55.63(exc. VAT)
  • RS Stock No. 177-5075
  • Mfr. Part No. 2CSF202201R2400 F202 A S-40/0,1
Each
£216.63(exc. VAT)
Better World
  • RS Stock No. 256-6800
  • Mfr. Part No. M9F52215
Each
£130.43(exc. VAT)
  • RS Stock No. 257-090
  • Mfr. Part No. 281649 BC-O-1/5-TW-ECO
Each
£20.92(exc. VAT)
  • RS Stock No. 245-9197P
  • Mfr. Part No. SF-0603SPA100R-2
Each (Supplied on a Reel)
£0.89(exc. VAT)
  • RS Stock No. 269-3781
  • Mfr. Part No. 0001.2508
Each
£0.22(exc. VAT)
  • RS Stock No. 119-358
  • Mfr. Part No. 13972M
Each
£295.56(exc. VAT)
  • RS Stock No. 275-0383
  • Mfr. Part No. LELHK11-1-62-40.0-01-V
1 Box of 5
£550.02(exc. VAT)
  • RS Stock No. 122-5272
  • Mfr. Part No. 60220016
Each (In a Pack of 10)
£1.497(exc. VAT)
  • RS Stock No. 444-343
  • Mfr. Part No. BDL26040LU
Each
£232.11(exc. VAT)
  • RS Stock No. 247-501
  • Mfr. Part No. 168827 BB-EVF-16/1P-1MU
Each
£27.64(exc. VAT)
  • RS Stock No. 201-6904
  • Mfr. Part No. 2CSR255080R2064
Each
£111.08(exc. VAT)
  • RS Stock No. 125-787
  • Mfr. Part No. 174222 IKA-1/6-ST
Each
£41.30(exc. VAT)
  • RS Stock No. 229-987
  • Mfr. Part No. 107794 NZMN2-A160-BT-NA
Each
£1,138.61(exc. VAT)
  • RS Stock No. 272-0226
  • Mfr. Part No. 3VA9467-0GX20
Each
£66.62(exc. VAT)
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