XL-21 power distribution cabinet is suitable for power plants and industrial and mining enterprises. Three phase three wire, three phase four wire and three phase five wire control systems with AC voltage of 500V and below are used for power and lighting distribution. L-21 power distribution cabinet is an indoor device, which is installed against the wall and overhauled in front of the screen.

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

1. Ambient temperature: - 50 ℃~+40 ℃, and the average temperature within 24h shall not exceed+36 ℃;

2. Altitude: no more than 2000m;

3. Relative humidity: no more than 50% when the ambient air humidity is+40 ℃; There can be a higher relative humidity at a lower humidity (for example, 90% at+20 ℃). Considering the temperature change, moderate frost is allowed;

4. When the equipment is installed, the inclination to the vertical plane shall not exceed 5 °

Places with severe vibration, no impact and no corrosion.