Product overview

XL-21 low-voltage power distribution box is suitable for power distribution in power plants and industrial and mining enterprises, in the AC voltage 500V and below the three-phase three-wire system.

XL-21 type low-voltage power distribution box is installed on the wall of the indoor device and repaired before the screen.

Model meaning

Conditions of use

Ambient temperature: -25℃~+50℃.

Altitude: No more than 2000 meters. Relative humidity: not more than 50% at the maximum temperature of +40 ° C, there can be a higher relative temperature at lower humidity, such as 90% at +20 ° C, taking into account the change in temperature allows for the production of moderate condensation.

When installing the device, the inclination of the vertical plane should not exceed 5°. The device should be installed in a place without severe vibration, impact, and corrosion.

Structural characteristics

XL-21 low voltage power distribution box is closed, the shell is made of steel plate bending, the knife switch operation handle is installed on the upper right column in front of the box, which can be used as a power switch. A voltmeter is installed in front of the distribution box to indicate the voltage of the bus. There is a door in front of the distribution box. After the door is opened, all the equipment in the distribution box is open for easy maintenance. The distribution box adopts the domestic design of new components, with compact structure, easy maintenance, line scheme can be flexibly combined and so on. In addition to air circuit breakers and fuses for short circuit protection, the distribution box is also equipped with contactors and thermal relays, and the front door of the box can be equipped with operation buttons and indicators.