Introduction
The XL-21 power cabinet is widely used in power plants and industrial enterprises. It is designed for power or lighting distribution in three-phase AC power supply systems with voltages below 500V, including three-phase three-line, three-phase four-line, and three-phase five-line systems. It is intended for indoor installation against a wall, with operation and maintenance performed from the front of the screen. The cabinet has a fully enclosed structure, assembled from C-profiles or 8MF profiles. Inside the cabinet, a new type of rotary load isolation switch is used, which allows operation under load. The front door is equipped with voltage and current indicating instruments, as well as signaling lamps, buttons, and change-over switches, which serve as the main control elements. The components used inside this distribution box are compactly designed, nice in appearance, and easy to maintain. A variety of wiring schemes are available for users to choose from.

Model meaning


Use conditions
>Ambient temperature: -5℃~+40℃, average temperature within 24h not above +35℃;
>Altitude: not above 2000m;
>Relative humidity: not above 50% when the surrounding air temperature is +40℃; with high relative humidity under low temperature (eg. 90% at +20℃), proper condensation is allowed in view of temperature changes;
>Gradient with the vertical surface not above 5° during equipment installation;
>The equipment should be installed at places without violent vibration, impact or corrosion.
Note: please negotiate with our company if above conditions are exceeded.

Technical parameters


Outline dimension drawing


Order information
Please provide following technical information during ordering:
>All models of the product (including main circuit scheme No. and auxiliary circuit scheme No.);
>Main circuit system drawing, cabinet plane arrangement drawing;
>Electric schematic diagram of auxiliary circuits;
>List of devices in the cabinet (main bus specifications);
>Cabinet color (supply with the light camel gray without specific requirements), box size;
>Other special requirements unconformable with regular use conditions of the product;
>Provided by the manufacturer according to standards when the main bus specifications are not provided.