Summary
XL(F)-21 series power distribution cabinet is suitable for power plants, industrial and mining enterprises, three-phase three wire, phase four wire, three-phase five wire systems with AC voltage of 5500v and below, used for power lighting distribution.
XL(F)-21 power distribution box is an indoor device, installed against the wall and maintained in front of the screen.

Model and its meaning


Main technical parameters


Normal use conditions
Ambient temperature: - 5 ℃ ~ + 40 ℃, and the average temperature within 24 hours shall not exceed + 35 ℃.
Altitude: not more than 2000m.
Relative humidity: not more than 50% when the ambient air temperature is + 40 ℃; higher relative humidity can be obtained at lower temperature (for example, 90% when + 20 ℃). Considering the change of temperature, moderate condensation is allowed.
When the equipment is installed, the vertical inclination shall not exceed 5 degrees.
The equipment shall be installed in a place without severe vibration, impact and corrosion.

Structural features
XL(F)-21 type low-voltage power distribution cabinet is an indoor wall mounted distribution device with single front door. Its basic structure is made of steel plate bending and angle steel welding. The front right side can be equipped with knife switch operating handle for power cut-off and connection operation. The door can be equipped with operating button, indicator light and display instrument. After opening the box, all the equipment inside the distribution box is open It is convenient for maintenance. This distribution box is equipped with air circuit breaker, fuse as short circuit protection, contactor and thermal relay.
The door and the shell are welded with grounding screws to ensure reliable connection between the shell and the ground.