MDmax ST High-Density Modular Distribution Cabinet

MDmax ST High-Density Modular Distribution Cabinet

MDmax ST is an ABB MDmax ST TTA Low-Voltage Switchgear, a fully type-tested (TTA) modular low-voltage switchgear system developed by ABB. It complies with IEC 61439-2 and GB/T 7251.2 standards.

Built on a 25 mm standardized modular G-profile aluminum-zinc coated steel frame, the system integrates four core advantages: enhanced safety protection, digital intelligent power distribution, high-density modular design, and long-term durability.

The product covers a current range from 400A to 6300A, and supports flexible configurations including incoming feeders, outgoing feeders, reactive power compensation, and motor control integration. It is widely applied in industrial manufacturing, renewable energy, municipal infrastructure, data centers, and commercial buildings, making it a mainstream solution for mid-to-high-end low-voltage power distribution systems.

Advantages and Features

• Ultra-High Circuit Density: Each cabinet can accommodate up to 36 half-size or quarter-size drawers (≤63A), achieving over 30% footprint reduction compared to conventional switchgear.

• Mixed-Configuration Compatibility: The same cabinet supports a flexible combination of fixed and withdrawable units, enabling integrated PCC/MCC applications. Drawer sizes range from 1/4 to full-size, covering motor loads from 0.37 kW to 800 kW.

• Tool-Free Rapid Assembly: A removable top cover design facilitates easy busbar installation. The plug-in vertical busbar system requires no tools, enabling efficient installation and maintenance.

• Multi-Scenario Installation Flexibility: Supports top, bottom, and side cable entry, as well as left-side, right-side, and back-to-back configurations, making it suitable for space-constrained rooms and E-House applications.

• Factory Prefabrication: Standardized factory production reduces on-site installation time by up to 40%.

• 100% Drawer Interchangeability: Fully interchangeable drawer units ensure standardized spare parts, significantly reducing inventory and maintenance costs.

• Rapid Expansion Capability: System upgrades and capacity expansion can be completed in as little as 10 minutes, enabling zero-disruption production line upgrades.

General Data