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

2265 / 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3800
  • Mfr. Part No. 3VA2040-8HM46-0AA0
Each
MYR7,981.15
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3601
  • Mfr. Part No. 1SDA071577R1
Each
MYR62,539.47
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 16A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 271-9461
  • Mfr. Part No. 3VA1196-5ED12-0AA0
Each
MYR945.68
Currently unavailable
Bourns Non Resettable Fuse 2A, 125V ac
  • RS Stock No. 191-4195
  • Mfr. Part No. SF-2410HI200T-2
Each (On a Reel of 1000)
MYR3.173
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 4 channels
  • RS Stock No. 259-4568
  • Mfr. Part No. 1SDA072815R1
Each
MYR26,402.19
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4105
  • Mfr. Part No. 3VA2116-7JQ36-0AA0
Each
MYR12,196.35
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3699
  • Mfr. Part No. 3VA2025-8HM32-0AA0
Each
MYR6,997.79
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 3 channels
  • RS Stock No. 259-3385
  • Mfr. Part No. 1SDA071308R1
Each
MYR287,420.91
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7686
  • Mfr. Part No. C12E4TM160B
Each
MYR4,677.37
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4583
  • Mfr. Part No. 3VA2125-7MN32-0AA0
Each
MYR4,581.84
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4013
  • Mfr. Part No. 3VA2110-7MS36-0AA0
Each
MYR4,115.87
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 80A, Fixed Mount
  • RS Stock No. 260-7511
  • Mfr. Part No. C10W4TM080
Each
MYR10,741.65
Temporarily out of stock
Lovato MCB, 1P, 3A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 188-1632
  • Mfr. Part No. P1MBUH1PC03
Each
MYR284.46
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0295
  • Mfr. Part No. 8GK1062-1KK31
Each
MYR5,446.78
New product - Preorder today
HOLDER FOR FKH (ATO) ADAPTER RIGHT
  • RS Stock No. 522-996
  • Mfr. Part No. 178.6191.0001
1 Pack of 500
MYR9,452.07
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 80A, Fixed Mount
  • RS Stock No. 260-7468
  • Mfr. Part No. C10V3TM080
Each
MYR6,037.01
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-7668
  • Mfr. Part No. C11N4TM100B
Each
MYR4,102.80
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 500A, Fixed Mount
  • RS Stock No. 260-8200
  • Mfr. Part No. C63F32M500
Each
MYR27,583.92
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-3926
  • Mfr. Part No. 3VA2110-0HM46-0AA0
Each
MYR9,323.69
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-3052
  • Mfr. Part No. 1SDA070907R1
Each
MYR50,551.90
1
2265
2329
Results per page

Related links