ABB Intelligent Low Voltage Switchgear
1. High Safety & Reliability: Manual crank withdrawable system with three-position interlocking ensures stable and precise operation, while automatic shutters provide up to IP40 protection for enhanced safety.
2. Flexible Modular Design: Standardized modular structure enables compact layouts and flexible configurations, allowing easy expansion and adaptation to different applications.
3. Powerful Electrical Performance: Main busbar current up to 6300A with strong short-circuit withstand capacity, supporting multiple AC/DC voltages for stable operation.
4. International Standard Compliance: Complies with IEC 61439-1/2 and GB/T standards, with TTA certification ensuring reliable and proven quality for global applications.
MDmax ST Digital Low Voltage Switchgear
The MDmax ST is a digital low voltage switchgear authorized by ABB for production by our company. Its performance and technical specifications have reached a leading level in the domestic market.
The electrical and mechanical design adopts a modular concept, utilizing standardized components and assemblies to achieve compact, flexible, and diverse panel configurations.
The withdrawable drawer units feature a manual crank-assisted interlocking mechanism, three-position status indication, vertically arranged hinged shutters, and a door-mounted instrument panel, ensuring high reliability and ease of operation.
The system complies with IEC 61439-2 and GB/T 7251.2-2023 standards.
Key Features
Manual Crank Withdrawable Drawer
Equipped with a multi-turn manual crank mechanism for easy drawer insertion and withdrawal.
Provides three-position positioning, indication, and locking, ensuring smooth operation without displacement or tilting, effectively eliminating mechanical failures.
Vertically Arranged Hinged Shutters (High Protection)
When the drawer is withdrawn, the shutters automatically close, achieving a protection level of IP40.
When the drawer is in the test or connected position, the shutters automatically open.
The shutter key is installed on the back of the drawer base plate.
Door-Mounted Instrument Panel
Adopts a hybrid structure of plastic frame and steel plate positioning.
Components are mounted on the steel plate and embedded into the plastic frame, allowing easy opening for maintenance, convenient installation, and flexible machining.
Technical Data
Standards
Type-Tested Assembly (TTA): GB7251.12-2013, IEC 61439-1
Electrical Characteristics
Rated Insulation Voltage (Ui): 690V / 1000V AC (3P), 1500V DC
Rated Operating Voltage (Ue): 400V / 690V AC (3P), 750V DC
Rated Impulse Withstand Voltage (Uimp): 6 / 8 / 12 kV
Overvoltage Category: I / III / IV
Pollution Degree: 3
Rated Frequency: Up to 60 Hz
Rated Current
Main Busbar:
Rated Current (Ie): Up to 6300 A
Peak Withstand Current (Ipk): Up to 220 kA
Short-Time Withstand Current (Icw): Up to 100 kA
Distribution Busbar:
Rated Current (Ie): Up to 2000 A
Peak Withstand Current (Ipk): Up to 176 kA
Short-Time Withstand Current (Icw): Up to 80 kA
Mechanical Characteristics
Modular Unit: E = 25 mm (in accordance with DIN 43660)
Cabinet & Structural Components: DIN 41488
Recommended Height: 2200 mm
Recommended Width: 400 / 600 / 800 / 1000 / 1200 mm
Recommended Depth: 600 / 800 / 1000 / 1200 mm
Global Projects
With a presence in more than 20 countries and regions, we specialize in supplying medium and low voltage switchgear for diverse construction applications. Committed to “Professional Production and Attentive Service,” we follow core values of integrity, innovation, efficiency, and shared success to deliver reliable products worldwide.
About Us
Our company covers 36,000 m² and is supported by 200 skilled professionals. We are dedicated to the R&D, manufacturing, and supply of complete high and low voltage switchgear systems (0.22kV–35kV), along with power engineering installation and retrofit services, delivering reliable solutions to industries including construction, commercial facilities, and healthcare with strict quality assurance.
Manufacturing Details
