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.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

46578 Products showing for Fuses & Circuit Breakers

2271 / 999+
ABB Emax2 Electronic Circuit Breaker 2kA Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-3704
  • Mfr. Part No. 1SDA071680R1
Each
MYR80,195.43
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3895
  • Mfr. Part No. 3VA2063-8HN32-0AA0
Each
MYR5,230.03
Schneider Electric, ComPacT MCCB 3P 500A, Fixed Mount
  • RS Stock No. 260-8249
  • Mfr. Part No. C63V32M500
Each
MYR23,582.86
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9596
  • Mfr. Part No. 3VA10404ED460AA0
Each
MYR2,393.49
Socomec 125 Centred Tag Fuse, NH1
  • RS Stock No. 223-2853
  • Mfr. Part No. 60PV0125
Each (In a Pack of 3)
MYR418.723
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-4604
  • Mfr. Part No. 1SDA072868R1
Each
MYR60,648.09
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4122
  • Mfr. Part No. 1SDA072229R1
Each
MYR42,185.80
Siemens SENTRON 3VA9 Rotary Operator for use with 3VA2 100/160/250
  • RS Stock No. 218-1843
  • Mfr. Part No. 3VA9267-0EK23
Each
MYR1,026.66
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-4540
  • Mfr. Part No. 1SDA072776R1
Each
MYR27,358.64
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4754
  • Mfr. Part No. 3VA2163-7JQ42-0AA0
Each
MYR12,295.40
Better World
Siemens, SENTRON MCCB 4P 20A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9831
  • Mfr. Part No. 3VA1120-5GD46-0AA0
Each
MYR2,679.43
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 260-7995
  • Mfr. Part No. C25S4D
Each
MYR6,607.04
Schneider Electric, ComPacT MCCB 3P 150A, Fixed Mount
  • RS Stock No. 260-8007
  • Mfr. Part No. C25V36M150
Each
MYR20,121.31
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4667
  • Mfr. Part No. 3VA2140-7JQ46-0AA0
Each
MYR10,709.24
Better World
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-3016
  • Mfr. Part No. 1SDA070867R1
Each
MYR44,577.35
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 80A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9408
  • Mfr. Part No. 3VA1180-3ED12-0AA0
Each
MYR834.04
Bourns 0.35A Resettable Fuse, 6V
  • RS Stock No. 647-8392P
  • Mfr. Part No. MF-USMF035-2
Each (Supplied on a Reel)
MYR2.267
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 874-4373
  • Mfr. Part No. 3VA2216-5HL32-0AA0
Each
MYR5,382.34
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-4594
  • Mfr. Part No. 1SDA072853R1
Each
MYR34,341.79
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3937
  • Mfr. Part No. 1SDA071982R1
Each
MYR204,623.58
1
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