产品型号及含义

Product model and meaning

规格尺寸

Specification and size

高度H（mm）× 宽度W（mm）× 深度D（mm）

1700    600（700、800）  350

1900    600（700、800）  450

用途及性能

XL-21型交流低压动力配电箱，适用于轻纺、冶金、化工、矿山、机械等厂矿企业，用于交流50HZ,额定电压380V或660V，额定电流至630A的三相三线、四线或五线制的低压配电系统中，作为动力和照明配电之用同时还可以作低压控制系统中的操作部分控制使用。

符合国家标准：执行标准（GB7251）。

Application and performance

XL-21 AC low-voltage power distribution box, suitable for textile, metallurgy, chemical, mining, machinery and other factories and mining enterprises, for AC 50HZ, rated voltage 380V or 660V, rated current to 630A three-phase three-wire, four wire or five wire system of low-voltage distribution system. As a power and lighting distribution, it can also be used to control the operating part of the low-voltage control system.

Meet the national standard: implementation standard (GB7251).

结构特点

XL-21型动力配电箱系统采用封闭式，外壳用钢板弯制而成，配电箱前面装有一只电压表，指示汇流母线间的电压，配电箱前面有门，门打开后，配电箱内全部设备敞露，便于检修维护。

XL-21型动力配电箱均采用国内自行设计的新型组件，具有结构紧凑，检修方便，线路方案可以灵活组合等特点，配电箱除装有空气断路器和熔断器作为短路保护外，还装有接触器和热继电器，箱前门可安装操作按钮和指示灯。

Structural characteristics

XL-21 power distribution box system is closed, the shell is made of steel plate bending, the front of the distribution box is equipped with a voltmeter, indicating the voltage between the bus, the front of the distribution box has a door, after the door is opened, all the equipment in the distribution box is open, easy to repair and maintenance.

XL-21 power distribution box are designed by the domestic new components, with compact structure, easy maintenance, line scheme can be flexible combination, distribution box in addition to air circuit breaker and fuse as short circuit protection, but also equipped with contactor and thermal relay, box front door can be installed operating buttons and indicators.