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. 654-745
  • Mfr. Part No. A9TSB3640
Each
£245.17(exc. VAT)
  • RS Stock No. 377-0257
  • Mfr. Part No. R223023
Each (In a Pack of 5)
£1.228(exc. VAT)
  • RS Stock No. 420-072
Each (In a Pack of 10)
£1.574(exc. VAT)
  • RS Stock No. 182-1827
  • Mfr. Part No. TFP125
Each
£72.30(exc. VAT)
  • RS Stock No. 275-0421
  • Mfr. Part No. M39019/02-249
Each
£751.04(exc. VAT)
  • RS Stock No. 188-6849
  • Mfr. Part No. A084318
Each (In a Pack of 10)
£3.727(exc. VAT)
Better World
  • RS Stock No. 238-3435
  • Mfr. Part No. A9PA4625
Each
£144.23(exc. VAT)
  • RS Stock No. 375-9626
  • Mfr. Part No. R201863
Each (In a Pack of 3)
£8.63(exc. VAT)
  • RS Stock No. 262-743
  • Mfr. Part No. 36ODGNA3.15
1 Pack of 3
£1,807.58(exc. VAT)
  • RS Stock No. 225-5981
  • Mfr. Part No. 2CDL210001R1006 PS1/6
Each
£2.80(exc. VAT)
  • RS Stock No. 177-8117
Each (In a Pack of 20)
£0.528(exc. VAT)
  • RS Stock No. 256-000
  • Mfr. Part No. 267511 Z-GV-16/3P-3TE/6
Each
£8.32(exc. VAT)
  • RS Stock No. 247-289
  • Mfr. Part No. 125NHG01B-400 NH FUSE 125A 400V GG/GL SIZE 01
1 Pack of 3
£21.39(exc. VAT)
  • RS Stock No. 141-234
  • Mfr. Part No. 2CCS892001R0505
Each
£153.35(exc. VAT)
  • RS Stock No. 177-5089
  • Mfr. Part No. 2CSF204201R2900 F204 A S-100/0,1
Each
£345.22(exc. VAT)
  • RS Stock No. 758-6851
  • Mfr. Part No. LZS:RT17016
1 Bag of 10
£6.59(exc. VAT)
  • RS Stock No. 703-8465
  • Mfr. Part No. C22G40
Each (In a Pack of 10)
£3.431(exc. VAT)
  • RS Stock No. 221-3495
  • Mfr. Part No. 279136 FAZ-C4/2-DC
Each
£144.68(exc. VAT)
  • RS Stock No. 272-0181
  • Mfr. Part No. 3VA1563-7MH32-0AA0
Each
£1,835.26(exc. VAT)
Better World
  • RS Stock No. 328-537
  • Mfr. Part No. 5SL6002-7KL
Each
£40.83(exc. VAT)
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