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

2226 / 999+
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 25 kA
  • RS Stock No. 209-6754
  • Mfr. Part No. 3VA1112-3EE42-0AA0
Each
MYR4,121.99
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3815
  • Mfr. Part No. 3VA2040-8KP36-0AA0
Each
MYR9,733.00
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3916
  • Mfr. Part No. 3VA2063-8KQ46-0AA0
Each
MYR12,132.19
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4131
  • Mfr. Part No. 3VA2116-8JP32-0AA0
Each
MYR10,807.69
Schneider Electric, ComPacT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 260-7589
  • Mfr. Part No. C11F3TM032L
Each
MYR2,283.50
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4829
  • Mfr. Part No. 3VA2563-7JP42-0AA0
Each
MYR27,598.59
Schneider Electric, ComPacT MCCB 3P 25A, Fixed Mount
  • RS Stock No. 260-7616
  • Mfr. Part No. C11H3TM025L
Each
MYR2,931.28
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9688
  • Mfr. Part No. 3VA11106GD460AA0
Each
MYR2,468.17
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4505
  • Mfr. Part No. 3VA2125-0HN36-0AA0
Each
MYR5,812.78
Better World
ABB, XT2V MCCB 4P 10A, Fixed Mount
  • RS Stock No. 236-6538
  • Mfr. Part No. 1SDA068010R1 XT2V 160 Ekip I 10A FF
Each
MYR6,811.68
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-3623
  • Mfr. Part No. 1SDA071599R1
Each
MYR61,610.08
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4558
  • Mfr. Part No. 3VA2125-7HM42-0AA0
Each
MYR7,074.42
Schneider Electric, ComPacT MCCB 4P 16A, Fixed Mount
  • RS Stock No. 260-7599
  • Mfr. Part No. C11F4TM016B
Each
MYR2,886.08
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 20A Current Rating
  • RS Stock No. 221-5604
  • Mfr. Part No. 3-128-215
1 Box of 10
MYR839.88
Schurter 1.6A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7897
  • Mfr. Part No. 0001.1006
Each (In a Pack of 10)
MYR3.04
Schneider Electric, ComPacT MCCB 4P 50A, Fixed Mount
  • RS Stock No. 260-7663
  • Mfr. Part No. C11N4TM050B
Each
MYR3,331.83
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4090
  • Mfr. Part No. 3VA2116-7HL46-0AA0
Each
MYR9,216.85
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4751
  • Mfr. Part No. 3VA2163-7JP46-0AA0
Each
MYR8,890.45
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4504
  • Mfr. Part No. 3VA2125-0HN32-0AA0
Each
MYR5,624.99
Schneider Electric, ComPacT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 260-7577
  • Mfr. Part No. C11E4TM063B
Each
MYR2,503.07
1
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