XL-21 Low-Voltage Power and Lighting Distribution Box

The XL-21 series power distribution cabinets are suitable for low-voltage distribution systems in power plants, substations, and industrial enterprises such as petroleum, chemical, metallurgical, and mechanical facilities, as well as in high-rise buildings. They serve to convert, distribute, and control electrical energy for power supply, distribution, motor control, and other applications. The XL-21 power distribution cabinets come in two configurations: the standard type (P‑type), with cabinet heights of 1700 mm and 1800 mm, features a freestanding design and can be equipped with cable entry/exit openings on the top as required; the top‑busbar type (M‑type), with a cabinet height of 1900 mm, is fitted with a removable top cover to facilitate busbar installation and removal.

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High- and Low-Voltage Switchgear Series

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Product Description

　　Overview

　　The XL-21 series power distribution cabinets are suitable for low-voltage distribution systems in power plants, substations, and industrial enterprises such as petroleum, chemical, metallurgical, and mechanical facilities, as well as in high-rise buildings. They serve to convert, distribute, and control electrical energy for power supply, distribution, motor control, and other applications. The XL-21 power distribution cabinets come in two configurations: the standard type (P‑type), with cabinet heights of 1700 mm and 1800 mm, features a freestanding design and, upon request, can be equipped with cable entry/exit openings at the top; the busbar‑top type (M‑type), with a cabinet height of 1900 mm, is fitted with a removable top cover to facilitate the installation and removal of busbars.

　　Product Features and Functions

　　The enclosure features a frame constructed from structural steel, with removable door panels and side and rear panels. The mounting plates and side beams are adjustable, enabling flexible and convenient installation and maintenance. The design is compact and highly versatile. Precision‑cast, adjustable door hinges ensure the door opens beyond 135°. After component installation, the internal mounting brackets can be adjusted as a whole. Wiring entries and exits can be configured to suit various operating environments, offering strong adaptability and allowing multiple units to be combined for use.

　　Technical Performance Parameters

　　Complies with the standards: IEC 439, GB 7251.1, JB/T 9661

　　Rated voltage: AC 400 V

　　Rated insulation voltage: 660 V

　　Rated current: 630 A

　　Rated short-time withstand current: 30 kA

　　Enclosure protection rating: IP30

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