Summary

XL-21 series low-voltage power distribution box is suitable for power distribution in power plants and industrial and mining enterprises in three-phase four wire or three-phase five wire systems with AC voltage of 500V and below.

XL-21 series low voltage power distribution box is an indoor device, which is installed against the wall and overhauled in front of the screen.

Normal service conditions

The installation height shall not exceed 2500m above sea level.

Ambient medium temperature not higher than + 40 ℃ and not lower than - 20 ℃.

The average relative humidity of the air is not more than 90%, and the general condensation that may happen accidentally due to temperature change is considered.

The inclination of vertical installation shall not exceed 5.

No obvious violent vibration, impact and bumpy place.

There is no place with explosion danger, and the gas and conductive dust in the medium are harmful enough to corrode and destroy the insulation.

Where there is no rain.

Main technical parameters

Rated working voltage: 400V rated insulation voltage: 690V

Rated frequency: 50 Hz

Rated working current: 15-630a