Al Zn Frame Low Voltage Withdrawable Switchgear LV Switchboard Customizable Size

The MNS Series Low-Voltage Switchgear represents the pinnacle of withdrawable switchboard technology. Based on a modular design, the MNS system is engineered for maximum reliability and safety in environments where space is at a premium and power continuity is non-negotiable.

Utilizing a completely withdrawable (draw-out) architecture, this assembly allows for up to 36 functional units to be housed in a single vertical cabinet. Each unit is physically isolated, ensuring that maintenance or replacement of one module does not impact the operation of adjacent circuits. It is the preferred choice for primary distribution and motor control centers (MCC) in large-scale power plants, petrochemical refineries, and marine vessels.

• Unmatched Space Efficiency: The MNS system allows for high-density configurations, supporting 1/4-unit and 1/2-unit drawers. This permits a larger number of circuits in a smaller footprint compared to GCK or GCS systems.

• Ultimate Operational Safety: Equipped with a multi-level mechanical interlocking system. The drawers have clear Connected, Test, Disconnected, and Withdrawn positions, ensuring zero contact with live parts during testing or maintenance.

• Maintenance-Free Busbar System: Features a high-conductivity T2 copper busbar system, often housed in a specialized plastic-encapsulated "U-type" busbar channel. This reduces the risk of phase-to-phase faults and internal arcing.

• Corrosion-Resistant Al-Zn Frame: The cabinet utilizes 2.0mm C-type profiles made from Al-Zn (Aluminum-Zinc) coated steel plates. This bolted structure provides exceptional mechanical rigidity and superior corrosion resistance without the need for additional painting.

• Effective Thermal Containment: Designed with independent ventilation for each functional compartment, preventing heat buildup and ensuring that the switchgear operates within rated temperature rise limits even under full load.

1.  Petrochemical & Offshore: Ideal for oil rigs and chemical plants due to its compact size and high resistance to corrosive saline environments.

2.  Modern Power Generation: Primary distribution and motor control for coal-fired, gas, and nuclear power stations.

3.  Critical Infrastructure: Main LV switchboards for international airports, massive desalination plants, and metropolitan rail networks.

4.  High-Rise Commercial: Reliable power hubs for landmark skyscrapers and integrated shopping malls.

• Silver-Plated Contact Technology: All primary and secondary plug-in contacts are silver-plated to ensure minimum contact resistance and prevent thermal oxidation over decades of use.

• Intelligent Monitoring Ready: Our MNS panels are fully compatible with Smart MCC technology, integrating PROFIBUS, MODBUS, or Ethernet-based communication for predictive maintenance and remote energy management.

• Global Component Compatibility: While we provide standard high-quality components, our design is fully compatible with ABB Emax/Tmax, Schneider MasterPact, and Siemens 3WL series circuit breakers.

• Seismic and Vibration Tested: The bolted Al-Zn frame is inherently resilient to mechanical stress, making it suitable for seismic zones and high-vibration industrial settings.

Q: What is the main difference between MNS and GCK switchgear?

A: MNS offers higher density (more drawers in one cabinet) and a more advanced "U-type" busbar system. MNS is generally preferred for high-end international projects, while GCK is often used for standard industrial applications.

Q: Can these cabinets be shipped as a single lineup?

A: To ensure safety during transit, we ship them in "shipping splits" (1-3 cabinets per section). They are designed for easy re-assembly on-site using standard tools.

Q: Is the MNS system arc-proof?

A: Yes. Our MNS assemblies are designed and tested to contain internal arcs within the compartment of origin, venting gases safely away from the operator.

MNS low-voltage extractable switchgear (hereinafter referred to as the device) is a reference to the foreign company MNS series low-voltage switchgear and comprehensive improvement after the production of standard modules. This device is suitable for AC 50Hz, rated working voltage of 660V and below the system. As a variety of power generation, transmission, distribution, power conversion and power consumption equipment control equipment, can be widely used in the industrial and mining enterprises, buildings, hotels, municipal construction and other low-voltage distribution system. In addition to general land use, after special treatment, it can also be used in offshore oil drilling platforms and nuclear power stations.

The device conforms to the world standard IEC439-1, the national standard GB7251.1.