XL-21

XL-21 Low-Voltage Power Distribution Cabinet (Box) Suitable for metallurgical, mining, petroleum, chemical, textile, port, and station enterprises. It serves as a power distribution and lighting solution for low-voltage distribution systems operating at 50Hz AC, with a rated voltage of 400V or 660V and a rated current of 630A, supporting three-phase three-wire, four-wire, or five-wire configurations. Additionally, it can be used to control certain squirrel-cage and wound-rotor motors within low-voltage control systems. Beyond standard stock dimensions, the distribution cabinet’s width (400~1000mm), height (1600~2200mm), and depth (400~800mm) can be customized to meet specific requirements.
The enclosure is constructed from high-quality electrolytic steel plate or galvanized steel plate, with a standard thickness of 2.0mm. Available in various colors upon request, with an epoxy resin electrostatic spray coating for an aesthetically pleasing and durable finish.
This product complies with standards including IEC 60439-1:1992, GB 7251.1-2013, GB 7251.12-2013, and GB 7251.3-2006 “Low-Voltage Switchgear and Controlgear Assemblies.”

Product Specifications

Technical Parameters

Item Technical Data
Rated Operating Voltage (V) 380
Rated Insulation Voltage (V) 690
Horizontal Busbar Rated Current (A) ≤ 630
Busbar Rated Short-Time Withstand Current (kA) 30
Busbar Rated Peak Withstand Current (kA) 63

Dimensions

Model Height (mm) Width (mm) Depth (mm)
XL-21-1 1680 600 400
XL-21-2 1780 700 400
XL-21-3 1880 700 400
XL-21-4 1880 800 400
XL-21-5 2080 800 550

Product Details Description
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