MNS Low Voltage Withdrawable Switchgear

Looking for a reliable supplier of MNS Low Voltage Withdrawable Switchgear? Shangming from China is a trustworthy choice. This switchgear features isolated zones, improving system maintenance efficiency and operational continuity. It has been exported to over 50 countries and regions worldwide.

What Is the MNS Low-Voltage Withdrawable Switchgear?

Initially developed by ABB of Switzerland and licensed for global manufacturing, the MNS low-voltage withdrawable switchgear is an advanced power distribution system. Shangming factory has mature processing technology for this product and supports customization.

Unlike GGD fixed switchgear, each circuit of the MNS is installed in an independently pull-out drawer module. If a circuit fails, the operator can directly pull out the drawer for repair or replacement, while other circuits in the cabinet continue to operate normally, thus achieving uninterrupted power supply during maintenance. Drawers of the same specifications are interchangeable, shortening fault recovery time.

Structural Features

The MNS Low Voltage Withdrawable Switchgear's frame is assembled using C-shaped profiles with 25mm modular holes, resulting in a lightweight structure with high mechanical strength and shock resistance.

The cabinet's interior is rigorously divided into three independent zones to prevent fault propagation:

Functional Unit Compartment: Contains drawer modules.

Busbar Compartment: Located at the rear or top of the cabinet, housing main and distribution busbars.

Cable Compartment: Located on the side of the cabinet, for external cable connections.

MNS also utilizes multi-functional panels made of high-strength flame-retardant plastic, effectively isolating horizontal and vertical busbars and preventing arcing between compartments.

Technical Parameters

Safety Design

During use, switchgear requires comprehensive consideration of personal safety and equipment protection. Shangming's products undergo seven quality inspection processes before leaving the factory to ensure that all major safety designs are in place, meeting international and domestic standards such as IEC 61439-1 / GB 7251.1, and providing complete certification documents and test reports.

Complete Isolation: The MNS Low Voltage Withdrawable Switchgear uses metal plates to completely isolate the functional unit compartment, busbar compartment, and cable compartment. Fault energy is confined within this compartment, not affecting adjacent circuits and preventing the spread of fault arcs.

Five-fold Interlock: Prevents electric shock or equipment damage caused by human error.

The drawer can only be pulled out from the connected position when the circuit breaker is open; the mechanical interlocking rod locks the push mechanism. → Prevents opening and closing the main circuit under load.

The functional unit compartment door and drawer position are interlocked; the door cannot be opened if the drawer is not fully pulled out; the busbar/cable compartment requires special tools to open. →Prevents accidental entry into energized compartments

The grounding switch and main switch are mechanically interlocked; the grounding switch cannot be closed when the main circuit is energized. →Prevents connecting grounding wires while energized

When the grounding switch is closed, the main switch cannot be advanced to the connection position. →Prevents energizing with grounding wire connected.

Optional key interlocking or electronic logic interlocking ensures correct operating sequence. →Prevents accidental opening and closing of circuit breakers.

Fault pressure relief: The MNS cabinet is designed with a dedicated pressure relief channel. In the event of an internal accidental short circuit, high-temperature, high-pressure gas is discharged upwards, protecting the operators in front, and meeting the IEC 61641 arc fault test requirements.

Which Industries Do We Recommend MNS Low-Voltage Withdrawable Switchgear For?

1. Petrochemical Industry

The petrochemical industry requires continuous production and cannot tolerate prolonged power outages. Operating conditions involve numerous motor circuits, large load capacities, and frequent starts. Fixed switchgear is too risky and incurs enormous maintenance costs.

MNS switchgear's drawer-type units allow for live maintenance in a safe environment, provide clear circuit isolation, reduce the impact of accidents, and facilitate expansion and upgrades.

2. Large-Scale Manufacturing

Large-scale manufacturing industries such as steel, cement, and automobile factories operate continuously with dense motor loads and large-scale electrical systems.

MNS supports MCC schemes, standardizes circuits, and allows for rapid maintenance and replacement. Functional units can be gradually added as production lines expand. If you plan to expand production in the future and require long-term use, MNS switchgear is more suitable.

3. Data Centers and Large Commercial Complexes

These applications have extremely high requirements for power continuity, with dense and complex load distribution, necessitating intelligent monitoring and zoned management. Power outages can result in significant economic losses.

MNS offers clear zoning, a safer power supply structure, and the ability to integrate intelligent monitoring modules, ensuring maintenance does not affect the overall system.

4. Municipal Infrastructure

Including subways, airports, hospitals, sewage treatment plants, etc.

Power supply stability is the lifeline for infrastructure, requiring zoned control and rapid recovery after maintenance. MNS allows for functional unit replacement even with minor power outages.

5. Power and Energy Industry

Power plant auxiliary systems, wind and solar power distribution systems, and low-voltage sides of substations. These scenarios have high requirements for safety levels and system reliability. MNS's partitioned structure and drawer-type units better meet design standards.