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

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  • RS Stock No. 541-4151
  • Mfr. Part No. 0218.080MXP
Each (In a Pack of 10)
£2.069(exc. VAT)
  • RS Stock No. 101-750
Each
£33.03(exc. VAT)
Better World
  • RS Stock No. 622-0020
  • Mfr. Part No. 5SY4103-7
Each
£22.02(exc. VAT)
  • RS Stock No. 223-7617
  • Mfr. Part No. 5TT4402-0
Each
£68.23(exc. VAT)
Better World
  • RS Stock No. 254-6309
  • Mfr. Part No. C11B44V100L
Each
£1,091.22(exc. VAT)
  • RS Stock No. 203-885
  • Mfr. Part No. 2CDS273001R0011
Each
£92.91(exc. VAT)
  • RS Stock No. 773-3555
  • Mfr. Part No. LPJ-40SP
Each
£116.64(exc. VAT)
Better World
  • RS Stock No. 238-3383
  • Mfr. Part No. A9P32310
Each
£142.55(exc. VAT)
  • RS Stock No. 219-6103
  • Mfr. Part No. 0154002.DR
Each (In a Pack of 10)
£2.618(exc. VAT)
  • RS Stock No. 136-0528
  • Mfr. Part No. HP10M2
Each (In a Box of 10)
£10.439(exc. VAT)
  • RS Stock No. 273-6416
  • Mfr. Part No. 106132 PKZ0-XH
Each
£58.58(exc. VAT)
  • RS Stock No. 647-7995
  • Mfr. Part No. MF-SMDF050-2
Each (In a Pack of 10)
£0.25(exc. VAT)
  • RS Stock No. 125-1457
  • Mfr. Part No. 1492-SPM1C100
Each
£19.09(exc. VAT)
Better World
  • RS Stock No. 221-1254
  • Mfr. Part No. LV432553
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£65.63(exc. VAT)
  • RS Stock No. 384-027
  • Mfr. Part No. 3101.0015
Each (In a Pack of 5)
£3.454(exc. VAT)
  • RS Stock No. 899-8813
  • Mfr. Part No. 3DU16R
Each
£43.49(exc. VAT)
  • RS Stock No. 218-8747
  • Mfr. Part No. 1492-SPM1C300
Each (In a Pack of 2)
£21.65(exc. VAT)
  • RS Stock No. 221-3489
  • Mfr. Part No. 269216 NZMB2-A200-NA
Each
£910.32(exc. VAT)
  • RS Stock No. 262-005
  • Mfr. Part No. CHM1DU
1 Pack of 12
£48.84(exc. VAT)
  • RS Stock No. 246-2244
  • Mfr. Part No. 2CCF544130E0631 F404A-LF63/0.3
Each
£655.06(exc. VAT)
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