MNS Low Voltage Switchgear

Product Overview

MNS series low-voltage withdrawable switchgear is an indoor low-voltage complete distribution device, suitable for three-phase AC 50Hz, rated working voltage of 380V/400V single busbar and single busbar sectionalizing power systems. It is widely used in various low-voltage distribution scenarios such as power plants, substations, industrial and mining enterprises, high-rise buildings, data centers, petrochemical industry, metallurgy, and rail transit. It is mainly used for receiving, distributing, controlling, protecting, and monitoring electrical energy, and can adapt to power distribution, motor control, reactive power compensation, lighting distribution, and other working conditions.

The product adopts a standardized withdrawable structure, integrating a Power Distribution Center (PC) and a Motor Control Center (MCC). Key components are made of high-quality materials. It features high breaking capacity, good dynamic and thermal stability, flexible electrical solutions, convenient assembly, strong interchangeability, easy maintenance, and high safety. It complies with national and industry standards such as GB 7251.1 and IEC 60439-1, and has passed CCC compulsory certification and ISO quality system certification. Its stable performance makes it an ideal device for modern low-voltage distribution systems.

Operating Environment

1. Ambient temperature: -5℃ to +40℃, 24h average temperature ≤ +35℃

2. Indoor installation, altitude ≤ 2000m (customizable up to 3000m for special conditions)

3. Relative humidity: ≤50% at +40℃; up to 90% at +20℃. Condensation due to temperature changes should be considered, and anti-condensation devices should be installed if necessary

4. Pollution degree: Level 3; customizable to Level 4 anti-corrosion protection

5. Installation inclination: ≤5° from vertical

6. Installation site: No fire, explosion, severe vibration, shock, corrosive gases, dust, or conductive dust. Keep away from strong electromagnetic interference

Technical Parameters

Product Features

1. Withdrawable structure, maintenance without power outage – Functional units adopt a standardized withdrawable design. They can be independently withdrawn and inserted without interrupting the entire power system during replacement and maintenance, ensuring power supply continuity and significantly reducing outage losses. Suitable for continuous production scenarios.

2. Modular design, strong versatility – Adopts a standard modular structure with flexible circuit configurations. Various schemes such as incoming, outgoing, bus tie, motor control, and capacitor compensation can be quickly assembled. Functional units of the same specification are interchangeable, reducing spare parts costs.

3. Complete interlock protection, safe and reliable – Equipped with service/test/withdraw three-position interlock, effectively preventing the functional unit from being pushed or pulled under load. The cabinet is divided into busbar compartment, functional unit compartment, and cable compartment. The three zones are independently isolated, reducing the risk of fault spread and ensuring personal and equipment safety.

4. Excellent dynamic and thermal stability – Optimized busbar layout and structural strength. High-strength conductive materials ensure low temperature rise and strong short-circuit resistance. Suitable for long-term stable operation under low-voltage high-current conditions, meeting various complex distribution requirements.

5. Convenient installation and expansion – Supports top and bottom incoming/outgoing wiring. Assembled cabinet design allows flexible side-by-side installation and busbar connection. Cable routing is easy, and later expansion is simple, adapting to different distribution room layouts.

6. Corrosion-resistant and durable, attractive appearance – Cabinet made of high-quality cold-rolled steel, phosphated and electrostatic spray-coated. Features high strength, oxidation resistance, corrosion resistance, and anti-aging properties. Smooth and flat surface suitable for various low-voltage distribution environments with long service life.

Our Advantages

1. Fast quotation response, professional primary/secondary electrical design, system optimization, and technical consulting tailored to MNS low-voltage distribution scenarios.

2. Standardized production lines, short delivery times, support for urgent orders, customization of special specifications and protection levels according to customer requirements.

3. Comprehensive after-sales service including on-site installation guidance, commissioning, operation training, and lifetime maintenance. Full support throughout equipment operation, ensuring customer peace of mind.

4. Full certifications including CCC, ISO, and type test reports, ensuring quality and compliance with national and industry standards.

5. Strict quality management from raw material procurement to finished product testing, ensuring stable product performance and meeting long-term operation requirements of low-voltage distribution systems.

Ordering Guidelines

Please provide the following information when ordering:

1. Main circuit scheme, secondary circuit system diagram, and auxiliary circuit control method, specifying low-voltage distribution scenario adaptation requirements.

2. Equipment layout drawing and distribution room layout drawing to optimize the installation plan and improve construction efficiency.

3. Incoming/outgoing wiring method (top/bottom), busbar connection requirements, cabinet installation spacing, and fixing method.

4. Type, rated current, short-circuit breaking current, and other key parameters of core components such as circuit breakers and contactors to ensure suitability for low-voltage operating conditions.

5. Special environmental requirements (high altitude, corrosion protection, explosion protection, high protection level, etc.) and special functional requirements must be specified in advance for consultation to ensure accurate adaptation to the usage scenario.