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.

50973 Products showing for Fuses & Circuit Breakers

55 of 999+
  • RS Stock No. 848-3961
  • Mfr. Part No. FNM-3
Each
£20.80
  • RS Stock No. 219-3592
  • Mfr. Part No. 0299060.TXN
Each (In a Pack of 10)
£2.496
Better World
  • RS Stock No. 772-1325
  • Mfr. Part No. 5SY4220-7
Each
£54.31
  • RS Stock No. 202-7200
  • Mfr. Part No. 5ST3730
Each
£7.42
  • RS Stock No. 787-4347
  • Mfr. Part No. 01530007Z
Each
£2.43
  • RS Stock No. 779-9980
  • Mfr. Part No. OFAF00H160 1SCA022627R1710
Each
£6.53
  • RS Stock No. 228-664
  • Mfr. Part No. C10M2 CYLINDRICAL FUSE 10 x 38 2A AM 500V AC
1 Pack of 10
£8.72
  • RS Stock No. 668-6085
Each (In a Pack of 10)
£0.509
  • RS Stock No. 188-4634
Each
£25.51
  • RS Stock No. 610-0910
  • Mfr. Part No. GB2CD16
Each
£47.67
Better World
  • RS Stock No. 203-2183
  • Mfr. Part No. 5SY6102-6
Each
£19.01
  • RS Stock No. 314-4787
  • Mfr. Part No. 50-179-06/4A
Each (In a Pack of 5)
£7.956
  • RS Stock No. 247-2932
  • Mfr. Part No. W216150
1 Box of 10
£17.77
  • RS Stock No. 725-8057
  • Mfr. Part No. 0218.032MXP
Each (In a Bag of 10)
£2.309
  • RS Stock No. 622-1118
  • Mfr. Part No. 5SE2340
Each (In a Pack of 10)
£2.404
  • RS Stock No. 825-5627
  • Mfr. Part No. P1MB1PD02
Each
£17.93
  • RS Stock No. 136-8589
  • Mfr. Part No. 1492-RCDA4A25
Each
£126.59
Better World
  • RS Stock No. 211-2400
  • Mfr. Part No. M9F23306
Each
£130.43
  • RS Stock No. 247-9234
  • Mfr. Part No. CM32FCW
Each
£16.86
  • RS Stock No. 232-0244
  • Mfr. Part No. 1SDA067392R1 XT1C 160 TMD 32A FF
Each
£214.83
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