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.

50907 Products showing for Fuses & Circuit Breakers

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  • RS Stock No. 217-6365
  • Mfr. Part No. 2800868
Each
£76.04(exc. VAT)
  • RS Stock No. 178-1134
  • Mfr. Part No. D1006621 / BTF69V125
Each (In a Pack of 5)
£39.704(exc. VAT)
  • RS Stock No. 174-0740
  • Mfr. Part No. 0508.500MXP
Each (In a Pack of 10)
£8.287(exc. VAT)
  • RS Stock No. 257-390
  • Mfr. Part No. 3VA5340-5EC31-0AA0
Each
£1,136.56(exc. VAT)
  • RS Stock No. 257-288
  • Mfr. Part No. 3VA5340-5EC31-1AA0
Each
£1,151.72(exc. VAT)
Better World
  • RS Stock No. 270-3598
  • Mfr. Part No. 3VA2010-8HL32-0AA0
Each
£646.00(exc. VAT)
Better World
  • RS Stock No. 271-9590
  • Mfr. Part No. 3VA10402ED420AA0
Each
£190.02(exc. VAT)
  • RS Stock No. 231-9639
  • Mfr. Part No. 2CDL220001R3058 PS 2/58/30
1 Box of 1
£114.43(exc. VAT)
  • RS Stock No. 707-7234
  • Mfr. Part No. GRS63-A
Each
£23.47(exc. VAT)
  • RS Stock No. 258-856
  • Mfr. Part No. 291473 EVG-16/3PHAS/16MODUL
Each
£18.37(exc. VAT)
  • RS Stock No. 396-005
  • Mfr. Part No. 3NC1493
Each (In a Pack of 2)
£191.71(exc. VAT)
  • RS Stock No. 203-2149
  • Mfr. Part No. 3NA6236
Each (In a Pack of 3)
£21.847(exc. VAT)
  • RS Stock No. 216-4806
  • Mfr. Part No. 5SE1363
Each (In a Pack of 10)
£25.533(exc. VAT)
  • RS Stock No. 563-404
  • Mfr. Part No. SPD-10S-277S
Each
£11.34(exc. VAT)
  • RS Stock No. 347-095
  • Mfr. Part No. C125H360FM
Each
£5,962.34(exc. VAT)
  • RS Stock No. 228-8245
  • Mfr. Part No. 8US1261-5FM08
Each
£41.58(exc. VAT)
  • RS Stock No. 654-619
  • Mfr. Part No. C125N320FM
Each
£4,158.13(exc. VAT)
  • RS Stock No. 262-580
  • Mfr. Part No. TB50
1 Pack of 20
£433.92(exc. VAT)
  • RS Stock No. 186-3480
  • Mfr. Part No. 2CSS245202R0204
Each
£10.14(exc. VAT)
  • RS Stock No. 231-9355
  • Mfr. Part No. 1SDA104723R1 xFP XT5 400A3p
Each
£74.48(exc. VAT)
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