Product Introduction XL-21 series power distribution boxes are suitable for low-voltage power distribution systems in power plants, substations, petroleum, chemical, metallurgy, machinery and other factories and high-rise buildings, as power, power distribution, electric motors, control centers and other power conversion, distribution and control. XL-21 power distribution box is divided into two types, the box height of 1700mm and 1800mm are ordinary type (P type), the box body is installed independently, and the top of the box can be opened according to requirements. Busbar type (M type), the top of the box is equipped with a detachable cover plate, which is convenient for the installation and disassembly of the busbar. Structural features and functions The box body is made of profiled steel frame, the door panel and the side and rear sealing plates are all detachable, the installation plate and side beam can be adjusted, installation and maintenance are flexible, convenient, compact in structure and good in versatility. With precision-cast adjustable door hinges, the opening of the door is greater than 135°C. The mounting bracket in the box can be adjusted as a whole after the components are installed. It can be installed and wired in and out according to different use environments. It has strong versatility and can be used in combination with multiple units. Technical Parameters 1. Comply with standards: IEC439, GB7251.1, JB/T9661 2. Rated voltage: AC400V 3. Rated insulation voltage: 660V 4. Rated current: 630A 5. Rated short-time withstand current: 30kA 6. Shell protection level: IP30