Custom made metal enclosure switchgear.

I. Product Overview

The XL series indoor distribution cabinets for low-voltage systems are suitable for a variety of power distribution scenarios. They are primarily used in low-voltage distribution systems with an AC frequency of 50 Hz, a rated operating voltage of 380 V/550 V, and a maximum rated current of up to 630 A. They are essential auxiliary equipment for powering industrial production, civil buildings, and infrastructure.

The main body of this cabinet is made of an enclosed steel structure, featuring robustness, excellent protective performance, rational layout, standardized wiring, and convenient maintenance. It can be flexibly configured with various components, such as circuit breakers, contactors, thermal relays, current/voltage transformers, smart meters, frequency converters, soft starters, reactive power compensation devices, etc., to achieve integrated functions such as power distribution, equipment control, line protection, operation monitoring, metering management, and remote communication. It is widely used in various scenarios, such as industrial enterprises, civil buildings, infrastructure, computer rooms, construction sites, and so on, and is one of the most widely used, technologically mature, and cost-effective standardized sets of equipment in the field of low-voltage distribution.

II. Basic structure and detailed characteristics

(1) Housing structure: Robust and with appropriate protective measures.

Material and Technology: The enclosure is made of high-quality cold-rolled steel sheets 1.5–2.0 mm thick, formed using CNC bending and precision welding (or modular assembly). The frame structure is stable, has high mechanical strength, can withstand short-circuiting and long-term loads, and is resistant to deformation and corrosion.

Fully enclosed design: a fully enclosed internal structure is used. The cabinet door fits tightly to the body and is equipped with a special rubber seal, effectively preventing dust and foreign objects from entering. The cabinet door is equipped with a safety lock, preventing improper operation and accidental contact with live parts by unqualified personnel, significantly enhancing equipment safety.

Cabinet Dimensions and Installation: Standard cabinet dimensions can be customized to meet specific needs. Common dimensions (height x width x depth) include 1800 x 800 x 600 mm, 2000 x 1000 x 800 mm, and so on, suitable for distribution rooms of various sizes. The cabinet is installed indoors on the floor, with mounting holes at the bottom, ensuring a secure connection to the floor and foundation beam, making installation convenient.

(2) Interior Layout: Scientific zoning, standardized layout.

Zone design: The body is scientifically divided into four independent zones, with clear layout and no interference.

Busbar area: located at the top of the cabinet and connected by copper (or aluminum) strips.

Component installation area: located in the center of the cabinet, where the main components are concentrated, such as circuit breakers, contactors, thermal relays, etc.

Wiring and Heat Dissipation: The wiring uses fire-resistant copper cables with a diameter appropriate for the required load. The wiring is reliable and has low contact resistance, eliminating the risk of overheating. Clear Labeling: All components, terminals, and lines within the cabinet are clearly labeled, including component models, line numbers, and operating instructions. This facilitates daily inspections, maintenance, and troubleshooting, as well as simplifies operation and maintenance.

(4) Scalability and customization: the ability to flexibly adapt to different requirements

Reserved expansion space: The cabinet provides ample space for installation and terminal blocks.

Individual configuration: Personalized configuration schemes can be customized according to the user's load type, control method, protection requirements, installation conditions, etc.

Flexible inlet and outlet nozzles: Various inlet and outlet modes are supported, such as top inlet and top outlet, top inlet and bottom outlet, bottom inlet and bottom outlet, etc. They can be flexibly selected according to the cable layout on site and the position of the bridge, adapting to different construction scenarios and improving work efficiency.

III. Main functions and application value

(1) Basic functions

Power distribution function: Safely and stably distribute electricity from the main power source (such as low-voltage distribution cabinets, transformers) to various loads (such as motors, fans, water pumps, lighting equipment, office equipment, etc.), ensuring reasonable power planning and efficient use of electricity.

Line and equipment protection function: Equipped with a full set of protective components to provide comprehensive protection, preventing damage to lines and equipment.

Short circuit protection: Quickly interrupt short circuit current using circuit breakers to prevent the spread of short circuit accidents and protect power lines and equipment.

Overload protection: The overload protection function provided by thermal relays or circuit breakers prevents the equipment from operating under overload conditions for a long time, thereby prolonging its service life.

Phase failure protection: Three-phase electric motors are equipped with a phase failure protection module to prevent motor burnout due to phase failure.

(2) The meaning of application

Ensure stable power supply: Complete protection function and reliable design ensure the continuous operation of the equipment for a long time, reducing power outages and providing reliable power supply to the load.

Enhanced safety: Sealed protection, protection against accidental failures, and comprehensive line protection eliminate potential risks of electric shock and equipment failure, ensuring the safety of personnel and equipment.

Reduced operating and maintenance costs: The user-friendly design, modular structure and lack of frequent maintenance reduce labor and material costs for operation and maintenance, and reduce the total life cycle cost.

Optimized energy management: Accurate metering and reactive power compensation functions help users manage energy consumption, reduce energy waste, and achieve energy conservation and emission reduction.

Flexible and versatile adaptability: Customizable configuration and expandability allow you to meet the individual needs of various scenarios and loads without reinvestment, increasing equipment efficiency.

Special AC voltage levels 380V/660V can be customized according to customer requirements.

Rated current: 100A, 250A, 400A, 630A. Suitable for all application scenarios from small distribution networks to medium industrial loads, and can also be custom-made to meet higher current requirements.

The nominal current of the busbar is 100–630 A. It is made of copper/aluminum rod, corresponds to the rated current, has low contact resistance and high conductivity.

Protection level: IP30 (standard), IP40 (optional). IP30: prevents finger contact with live parts and dust; IP40: dust- and moisture-proof, suitable for use in harsh environments.

Case dimensions: can be custom made to any size according to user requirements and component configuration.

Operating conditions: Temperature: -5℃ to +40℃; Humidity: ≤95% (non-condensing); Altitude: ≤2000 meters.

IV. Key product advantages (key differences)

High level of standard compliance: Designed and manufactured in strict accordance with national and industry standards, and has undergone a full range of type tests and factory inspections, ensuring product quality and easy acceptance by energy authorities and regulatory bodies.

Comprehensive protection: an enclosed design with an IP30 rating or higher effectively prevents dust, accidental contact, and foreign object penetration. It is equipped with a full range of protective features, including short-circuit, overload, phase failure, and undervoltage protection, completely eliminating potential equipment failure and personal safety hazards.

Structural stability: The body adopts high-quality cold-rolled steel structure, combined with precision welding, which has high mechanical strength, can withstand short-circuit impact, is not susceptible to deformation and corrosion, and ensures stable and reliable operation.

Flexible configuration: According to the load type, control method and protection requirements, components such as circuit breakers, contactors, inverters and smart meters can be freely combined to meet different needs.

Customizable dimensions: Cabinets can be sized to suit different distribution room sizes without the need for additional on-site modifications.

Expandable Functionality: Ample expansion space allows flexible addition of branch circuits, intelligent modules, reactive power compensation devices, etc., reducing upgrade costs.

Front-facing operation and maintenance: All operations and maintenance can be performed from the front of the cabinet, without requiring additional space, making operation and maintenance easy.

Modular Design: Components are installed in a modular manner, making them easy to replace, reducing downtime and increasing operational and maintenance efficiency. 

Low maintenance: The main components are made of high-quality materials from reputable brands, ensuring reliable operation. Under normal conditions, only regular visual inspection is required; frequent disassembly and maintenance are not necessary, reducing labor and material costs for operation and maintenance.

V. Applicable scenarios (full scenario coverage)

Manufacturing Shops: Distributes and controls power for power equipment such as fans, water pumps, air compressors, machine tools, production lines, and conveyor belts.

Mining/Metallurgy: Power distribution for mining equipment and metallurgical production lines in high dust and high vibration environments.