XL-21 series OEM power distribution box cabinet

Overview 

The XL-21 power distribution cabinet is a low-voltage distribution device widely used in the power distribution systems of industrial and civil buildings.    This product is mainly used in AC 50Hz, rated voltage 380V/660V, and rated current up to 630A power distribution systems.    The XL-21 power distribution cabinet features a compact structure, stable performance, and easy installation, making it an indispensable part of modern power distribution systems.

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Operating Conditions

• Ambient temperature: -50℃ ~+40℃, and the average temperature within 24h does not exceed +36℃;

• Altitude: no more than 2000m;

• Relative humidity: no more than 50% when the ambient air humidity is +40℃; At lower humidity there can be a higher relative humidity  (e.g. 90% at +20 ° C), allowing for moderate condensation taking into account the change in temperature.

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

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Product Features

High Reliability

• Uses high-quality electrical components to ensure reliability and long service life.

• Excellent electromagnetic interference resistance, ensuring system stability.

Flexible Design

• Modular design allows for easy expansion and maintenance, enabling flexible configuration.
  

• Multiple in-out line options, including top and bottom entry, to meet different on-site installation requirements.

Safety

• Equipped with comprehensive protection devices, including overload, short circuit, and leakage protection, ensuring safety.
  

• The enclosure is made of high-strength cold-rolled steel plate with surface spray treatment, achieving a protection level of IP30 or higher, effectively preventing external environmental impacts on internal components.
  

Ease of Operation

• Reasonable panel layout with clear positions for various switches, indicators, and instruments, making operation simple.
  

• Clear markings and operating instructions facilitate quick user familiarization.
  

Efficient Heat Dissipation

• Combines natural ventilation and forced ventilation to ensure effective heat dissipation during high-load operation.
  

• Internal cabinet layout ensures smooth airflow, preventing overheating.
  

Eco-Friendly and Energy-Saving

• Uses low-power components to reduce energy consumption, aligning with modern green environmental protection concepts.
  

• Low noise and stable operation, with minimal environmental impact.
  

Intelligent

• Optional intelligent monitoring system for real-time monitoring and data recording of parameters such as current, voltage, and power.
  

• Supports remote monitoring and management, enhancing system intelligence.
  

Easy Maintenance

• Modular design for easy replacement and repair, reducing downtime.
  

• Provides detailed technical support and after-sales service to ensure long-term stable operation.|
  

Cost-Effective

• Reasonable design and excellent cost control, offering a high cost-performance ratio.
  

• Suitable for projects with various budgets, providing economical and practical power distribution solutions.

Technical parameters of the main equipment

Knife fusion combination switch

Model number	Rated current (A)	Melt current rating (A)	Remark
HR3-400/34	400	150,200,250,300,350,400	There is no melt when installing the isolating blade

Current transformer

Model number	Rated current (A)	Secondary current (A)	Remark
LM-0.5	75、100、150、200、300、600	5

Fuse

Model number	Fuse	Fuse current rating (A)	Remark
RL1-15	15	2,4,5,6,10,15
RL1-60	60	20,25,30,35,40,50,60
RL1-100	100	30,40,50,60,80,100
RL1-200	200	80,100,120,150,200
RL1-400	400	150,200,250,300,350,400

Ac contactor

Model number	Rated current (A)	Melt current rating (A)	Remark
CJ10-10	10	Communication 110 220 380
CJ10-20	20
CJ10-40	40
CJ10-80	80
CJ10-150	150

Main circuit scheme diagram

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