MT-M1 400A Digital Electronic MCCB, 3/4P, 50kA, Microprocessor Protection

The MT-M1 400A Digital Electronic MCCB is a high-performance circuit protection device designed for modern electrical systems. Integrating a programmable microprocessor trip unit, it allows precise adjustment of protection for overload, short-circuit, and ground fault conditions. Its compact yet resilient thermoset housing contains intelligent electronics for real-time current monitoring, accurate energy measurement, and detailed fault logging.

This 400A breaker is ideal for medium- to high-capacity circuits in industrial, commercial, and critical infrastructure applications. With flexible DIN rail and panel mounting options, it fits neatly into distribution boards, switchgear, and control panels while providing full protection and advanced monitoring capabilities.

Key Features

Programmable Protection Curves – Fully adjustable L, S, I, G trip curves for tailored protection.

Digital Monitoring – LCD display shows live current, voltage, power, energy, frequency, and power factor; maintains up to 128 fault events.

High Breaking Capacity – Rated up to 50kA at 415V AC for reliable interruption of fault currents.

Communication Ready – RS485 Modbus-RTU interface; optional Ethernet or PROFIBUS-DP for integration into smart systems.

Compact & Durable Design – Thermoset housing withstands -40°C to +85°C, rated for 20,000 mechanical cycles.

Early Warning & Fault Alerts – Proactive notifications allow maintenance before system failures.

Flexible Installation – Compatible with panel and DIN rail mounting; optimized for space efficiency.

Applications

The 400A electronic MCCB is suitable for applications demanding both robust protection and smart monitoring:

Critical Power Systems – Data centers, hospitals, airports, and financial backup circuits.

Industrial Automation – Motor control centers, manufacturing lines, and machinery with high startup demands.

Energy Management – Smart grids, building management systems (BMS), renewable energy integration, and centralized power monitoring.

Specialized Protection – Transformer circuits, generator backups, main distribution breakers, and networked load coordination.

Programmable settings allow seamless coordination with downstream devices, while communication interfaces enable remote supervision, data collection, and integration into intelligent power networks.

Competitive Advantages

1. Precision Protection Technology

32-bit microprocessor ensures ±2% current measurement accuracy.

Eight configurable protection parameters (Ir, Tr, Isd, Tsd, Ii, Ig, tg, k).

Independent four-level L-S-I-G protection for comprehensive safeguarding.

2. Intelligent Monitoring

Real-time display of key electrical metrics (U, I, P, Q, F, PF, kWh).

Records up to 128 fault events with timestamps.

Proactive alerts for early detection of potential issues.

3. Exceptional Technical Performance

50kA breaking capacity at 415V AC.

Operational in extreme temperatures (-40°C to +85°C).

Rated for 20,000+ mechanical cycles.

Dual power supply (self-powered + auxiliary) ensures continuous stability.

4. Advanced Communication

RS485 with Modbus-RTU support; optional Ethernet/PROFIBUS-DP.

Remote control and real-time monitoring enabled.

5. User-Friendly Design

128×64 LCD display with multi-language interface.

Password-protected front-panel buttons.

Plug-and-play communication modules simplify setup.

6. Quality Assurance

IEC 60947-2 and GB 14048.2 certified.

5-year warranty; 72-hour pre-shipment testing.

7. Customization & Support

Custom protection curves for special applications.

OEM/ODM branding options.

Firmware upgrades available for future enhancements.

The MT-M1 400A MCCB merges high-speed fault clearing, precise measurement, and predictive maintenance capabilities, reducing downtime and maintenance costs by up to 35% compared with traditional thermal-magnetic breakers, making it an intelligent and reliable solution for modern electrical systems.