The XL-21 Series Power Distribution Cabinets are suitable for power plants, industrial and mining enterprises, and AC systems up to 550V, including three-phase three-wire, three-phase four-wire, and three-phase five-wire configurations. They are widely used for indoor and outdoor power and lighting distribution in sectors such as industry, mining, metallurgy, chemicals, hotels, banks, stations, ports, and rail transportation. For outdoor applications, please consult the equipment manufacturer.
◆ Ambient Air Temperature: Upper limit: +40°C, Lower limit: -25°C. The average temperature measured over a 24-hour period shall not exceed +35°C. During storage and transportation, the temperature range is -25°C to +55°C, with short-term exposure (generally not exceeding 24 hours) not surpassing 70°C.
◆ Altitude: Not exceeding 2000m.
◆ Relative Humidity: The air relative humidity at the maximum temperature of +40°C shall not exceed 50%.
◆ The equipment is designed for indoor use, free from dust, corrosive gases, rain ingress, vibration, and jolting. The installation tilt angle should not exceed 5°.
◆ The equipment shall be installed in locations without severe vibration or impact, and in areas not prone to causing corrosion to electrical components and materials.
◆ Users with special requirements may consult with our company’s technical engineers for a solution.
When placing an order, customers must provide the following information:
◆ Primary circuit diagram and single-line system diagram.
◆ Secondary wiring schematic diagram.
◆ Cabinet outline dimensions.
| Name | Parameter |
| Rated working voltage | AC230V/AC400V |
| Rated insulation voltage | ≤690VAC |
| Protection grade | IP2X~IP3X |
| Peak withstand current | 6KA~65KA |
| Maximum rated working current | 63A~100A |
| Frequency | 50HZ |
| Short time withstand current | 3KA~42KA |
◆ Indoor-type construction.
◆ Fabricated from bent and welded rigid steel plates.
◆ Various components can be assembled according to the GB7251 standard based on customer requirements.
◆ The cabinet is equipped with reliable Neutral (N), Protective Earth (PE), and PEN conductors, ensuring earth continuity.
◆ All incoming and outgoing lines use cables. Doors are fitted with sealing rubber gaskets.
◆ Designed to prevent unauthorized opening of all doors without the use of a key or special tools.
