MT-M1 Digital Electronic MCCB, 250A, 3/4P, 50kA, Microprocessor-Controlled Circuit Breaker

The MT-M1 250A Digital Electronic MCCB delivers advanced circuit protection for modern electrical networks, combining precision microprocessor control with rugged molded case construction. Designed to safeguard AC 50Hz power distribution systems, this breaker handles overloads, short-circuits, and ground faults with fully programmable protection curves. Its compact thermoset housing ensures long-term durability and heat resistance, while integrated electronics provide real-time current monitoring, energy measurement, and detailed fault logging.

Optimized for 250A applications, this MCCB is ideal for mid- to high-capacity circuits in industrial, commercial, and critical infrastructure systems. It supports both DIN rail and panel mounting, enabling flexible installation in distribution boards, switchgear, and control panels.

Key Features

1. Programmable Protection – Adjustable L, S, I, G protection curves with precise microprocessor control to suit a wide range of load conditions.
2. Intelligent Monitoring – LCD display provides live readings of current, voltage, power, frequency, power factor, and energy consumption; logs up to 128 fault events.
3. High Breaking Capacity – Rated up to 50kA at 415V AC for reliable short-circuit interruption in demanding applications.
4. Flexible Installation – Supports both panel and DIN rail setups; compact design maximizes space efficiency.
5. Communication Capabilities – RS485 (Modbus-RTU) interface included; optional Ethernet or PROFIBUS-DP for remote monitoring and automation.
6. Durable Construction – High-strength thermoset housing; wide operating temperature range from -40°C to +85°C; rated for 20,000 mechanical cycles.
7. Safety & Reliability – Multi-level protection prevents damage to downstream devices and ensures operator safety.

Applications

This 250A electronic MCCB is suited for applications requiring both robust protection and intelligent monitoring:

* Critical Power Systems – Data centers, hospital emergency circuits, airports, and financial institution backup systems.

* Industrial Automation – Motor control centers, automated production lines, and heavy machinery requiring precise protection.

* Energy & Building Management – Smart grids, BMS, renewable energy integration, and power monitoring centers.

* Specialized Use Cases – Transformer protection, generator backup circuits, main load center breakers, and networked circuit coordination.

Its programmable settings allow coordination with downstream devices, while communication interfaces support remote supervision, fault analysis, and integration into intelligent electrical networks.

Competitive Advantages

Why the MT-M1 250A Digital MCCB Excels:

1. High-Precision Protection – 32-bit microprocessor delivers ±2% measurement accuracy; eight adjustable protection parameters; customizable 4-level L-S-I-G protection.
2. Smart Monitoring & Logging – Real-time data display; early warnings; detailed fault history for predictive maintenance.
3. Outstanding Technical Performance – 50kA breaking capacity at 415V AC; wide temperature tolerance; 20,000+ mechanical operations.
4. Advanced Communication – RS485 (Modbus), optional Ethernet/PROFIBUS-DP; remote control and diagnostics.
5. User-Friendly Design – 128×64 LCD with multiple languages; front-panel setup; plug-and-play communication modules.
6. Certified Quality – IEC 60947-2 and GB 14048.2 compliance; 5-year warranty; full pre-shipment testing.
7. Customization Options – Tailored protection curves, OEM branding, and firmware upgrades for evolving requirements.

The MT-M1 250A MCCB combines precision engineering with intelligent features, providing reliable, cost-effective, and smart protection for medium- to high-capacity electrical systems.