產品型號及含義

Product model and meaning

規格尺寸

Specification and size

高度H（mm）× 寬度W（mm）× 深度D（mm）

1700    600（700、800）  350

1900    600（700、800）  450

用途及性能

XL-21型交流低壓動力配電箱，適用于輕紡、冶金、化工、礦山、機械等廠礦企業，用于交流50HZ,額定電壓380V或660V，額定電流至630A的三相三線、四線或五線制的低壓配電系統中，作為動力和照明配電之用同時還可以作低壓控制系統中的操作部分控制使用。

符合國家標準：執行標準（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).

結構特點

XL-21型動力配電箱系統采用封閉式，外殼用鋼板彎制而成，配電箱前面裝有一只電壓表，指示匯流母線間的電壓，配電箱前面有門，門打開后，配電箱內全部設備敞露，便于檢修維護。

XL-21型動力配電箱均采用國內自行設計的新型組件，具有結構緊湊，檢修方便，線路方案可以靈活組合等特點，配電箱除裝有空氣斷路器和熔斷器作為短路保護外，還裝有接觸器和熱繼電器，箱前門可安裝操作按鈕和指示燈。

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.