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

2286 / 999+
ABB Emax2 Electronic Circuit Breaker 6.3kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4449
  • Mfr. Part No. 1SDA072648R1
Each
MYR249,506.99
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 211-3727
  • Mfr. Part No. 3VA1125-4GF46-0AA0
Each
MYR2,853.58
Better World
ABB Emax2 Electronic Circuit Breaker 250A 1SDA07, 3 channels
  • RS Stock No. 259-9869
  • Mfr. Part No. 1SDA070699R1
Each
MYR48,499.40
Better World
Siemens SENTRON 5SY8 MCB, 1P, 32A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 213-1109
  • Mfr. Part No. 5SY8132-7
Each
MYR269.47
Schneider Electric, ComPacT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-7512
  • Mfr. Part No. C10W4TM100
Each
MYR9,180.48
ABB Emax2 Electronic Circuit Breaker 800A Ekip Touch LSIG, 3 channels
  • RS Stock No. 259-4043
  • Mfr. Part No. 1SDA072116R1
Each
MYR32,046.03
RS PRO SMD Non Resettable Fuse 2.5A, 125V
  • RS Stock No. 182-4112
Each (In a Pack of 25)
MYR1.54
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 3 channels
  • RS Stock No. 259-4461
  • Mfr. Part No. 1SDA072660R1
Each
MYR306,285.00
ABB Emax2 Electronic Circuit Breaker 5kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3351
  • Mfr. Part No. 1SDA071267R1
Each
MYR187,897.06
ABB Emax2 Electronic Circuit Breaker 6.3kA Ekip Touch LI, 4 channels
  • RS Stock No. 259-3895
  • Mfr. Part No. 1SDA071924R1
Each
MYR252,573.63
Better World
ABB, Tmax XT MCCB 3P 50A, Fixed Mount
  • RS Stock No. 236-6681
  • Mfr. Part No. 1SDA068304R1 XT4S 160 TMA 50A FF
Each
MYR3,168.92
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-4404
  • Mfr. Part No. 1SDA072586R1
Each
MYR133,112.15
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3652
  • Mfr. Part No. 3VA2025-6JP32-0AA0
Each
MYR7,981.69
Better World
Siemens, SENTRON MCCB 4P 500A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 270-3504
  • Mfr. Part No. 3VA1450-4GF42-0AA0
Each
MYR15,120.17
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-4402
  • Mfr. Part No. 1SDA072584R1
Each
MYR126,463.24
Better World
Siemens SENTRON Fire Safety Circuit Breaker, 1+N, 6A Curve C, 230V AC
  • RS Stock No. 238-3209
  • Mfr. Part No. 5SV6016-7MC06
Each
MYR1,713.57
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 4 channels
  • RS Stock No. 259-3771
  • Mfr. Part No. 1SDA071778R1
Each
MYR99,709.99
Schneider Electric, ComPacT MCCB 3P 50A, Fixed Mount
  • RS Stock No. 260-7485
  • Mfr. Part No. C10W32M050
Each
MYR8,357.38
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 3 channels
  • RS Stock No. 259-4300
  • Mfr. Part No. 1SDA072434R1
Each
MYR66,721.22
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4066
  • Mfr. Part No. 3VA2116-0KP46-0AA0
Each
MYR15,151.25
1
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