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

2308 / 999+
Schneider Electric, ComPacT MCCB 3P 150A, Fixed Mount
  • RS Stock No. 260-7907
  • Mfr. Part No. C25H32M150
Each
MYR9,455.29
Siemens 230V ac Circuit Trip
  • RS Stock No. 223-7668
  • Mfr. Part No. 5TT4472-0
Each
MYR979.11
Siemens ALPHA Cover for use with ALPHA 400/630
  • RS Stock No. 216-4817
  • Mfr. Part No. 8GK4501-4KK22
Each
MYR1,060.09
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4101
  • Mfr. Part No. 3VA2116-7JP36-0AA0
Each
MYR10,383.00
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3659
  • Mfr. Part No. 3VA2025-6JQ46-0AA0
Each
MYR11,691.42
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9327
  • Mfr. Part No. 3VA1140-4GE46-0AA0
Each
MYR2,498.93
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3714
  • Mfr. Part No. 3VA2025-8JQ42-0AA0
Each
MYR11,222.79
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4592
  • Mfr. Part No. 3VA2140-0HL36-0AA0
Each
MYR5,388.97
Better World
Siemens SENTRON MCB, 1+N, 8A Curve C, 230V AC
  • RS Stock No. 238-3186
  • Mfr. Part No. 5SL6008-7MC
Each
MYR929.55
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3767
  • Mfr. Part No. 3VA2063-5HL32-0AA0
Each
MYR2,658.55
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3959
  • Mfr. Part No. 3VA2110-6JP42-0AA0
Each
MYR8,697.99
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3766
  • Mfr. Part No. 3VA2040-6KP36-0AA0
Each
MYR6,984.40
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3496
  • Mfr. Part No. 1SDA071463R1
Each
MYR37,020.12
Siemens SENTRON 5SJ MCB, 1P, 25A
  • RS Stock No. 232-2241
  • Mfr. Part No. 5SJ4125-7HG40
Each
MYR258.95
ABB 50A Tag Fuse, 150 x 40 x 72mm, 500V
  • RS Stock No. 250-4435
  • Mfr. Part No. 1SCA022697R8380
1 Box of 3
MYR457.00
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV4PEM 3 Pole 690V ac Voltage Rating, 12.5A Current Rating
  • RS Stock No. 175-1575
  • Mfr. Part No. GV4PEM12N6
Each
MYR3,400.26
Siemens 8V ac Circuit Trip
  • RS Stock No. 223-7611
  • Mfr. Part No. 5TT4101-4
Each
MYR307.38
Better World
Siemens SENTRON Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 210-9409
  • Mfr. Part No. 3VA9504-0JB23
Each
MYR1,483.92
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9339
  • Mfr. Part No. 3VA1140-6GD46-0AA0
Each
MYR2,020.41
ABB Emax2 Electronic Circuit Breaker 2kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-4259
  • Mfr. Part No. 1SDA072387R1
Each
MYR61,888.89
1
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