Circuit breakers are devices used to protect electrical circuits and related equipments from overload and short-circuit overcurrents. It is imperative to choose and size circuit breakers according to each specific application, and level of protection imposed by safety requirements.

WEG series of Air Circuit Breakers offers high breaking capacity to protect low voltage applications in high power circuits. Its modular design is enhanced by only four different frame sizes to best suit most  applications.

- Rated currents up to 6300A
- Available in four different frames, more compact for panel assembly
- High short-circuit breaking capacity (up to 120kA at 415V)
- LSGI protection integrated to the electronic protection unit
- Available in three and four poles

Some accessories are supplied as standard for the entire line:
- 5NO and 5NC auxiliary contacts plus alarm contacts
- Opening and closing coils (220 Vac/dc)
- Operation counter
- Insulation barriers
- Key lock (withdrawable version only)
- Position indicator - inserted/test/withdrawn (withdrawable version only)

Other accessories may be purchased separately:
- Motorized drive
- Opening and closing coils (different voltages than originally supplied)
- Capacitive trip unit
- Undervoltage release
- Mechanical and door interlock
- Door frame
- And others

These products were developed to meet and exceed application needs, such as:
- Reliable and continuous power supply, e.g. hospitals, office buildings, communication facilities
- Energy distribution and industrial plants