MDmax ST Long-Life Reliable Industrial Distribution Cabinet

MDmax ST Long-Life Reliable Industrial 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

• Corrosion-Resistant and Durable Enclosure: Constructed from 1.5–2.0 mm aluminum-zinc coated steel, the cabinet withstands 5,000 hours of salt spray without corrosion. The surface is finished with epoxy powder coating (RAL 7035), providing excellent aging resistance and color stability.

• Reliable Busbar System: Uses high-purity copper busbars with tin plating to prevent oxidation. Bolted connections with insulated supports ensure stable full-load operation without overheating.

• Flame-Retardant Insulation System: All internal insulation components are V-0 rated flame-retardant epoxy, resistant to arcing and high temperatures, effectively preventing insulation breakdown.

• Authoritative Certifications: Certified by CCC, TTA Type Test, and KEMA. With hundreds of thousands of installations worldwide, the system demonstrates a failure rate below 0.5%.

• Optimized Cooling Airflow Design: Utilizes an enhanced natural convection ventilation channel to ensure efficient heat dissipation, effectively reducing thermal stress and component degradation.

• Reinforced Door Lock and Hinge System: Designed for smooth operation and secure locking, ensuring long-term structural stability and reliable cabinet access.

• Seismic-Resistant Structure: Engineered to meet operational requirements in earthquake-prone regions, ensuring stable and safe performance under seismic conditions.

General Data