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M3EL Electronic Adjustable MCCB Molded-Case-Circuit-Breaker with LCD screen
M3EL series is a high-performance intelligent molded case circuit breaker with LCD digital display, specially designed for AC 50Hz, AC400V power distribution systems. The M3EL-250Y/4 model features 250A rated current, adjustable leakage current (50~1000mA), and 85kA ultimate breaking capacity, complying with GB14048.2 standard.
Equipped with high-definition LCD screen and intelligent control panel, M3EL can realize real-time monitoring of electrical parameters, fault alarm and precise protection, widely used in industrial distribution, intelligent buildings and high-safety power systems
M3EL Series – Core Features
- Integrated LCD digital display for real-time parameter monitoring (current/voltage/fault code)
- Adjustable rated current Ir (A-class adjustable) and leakage current IΔn (50~1000mA adjustable)
- High breaking capacity: Icu=50kA/1s, Ics=85kA, Icw=50kA (meets Type B protection standard)
- Intelligent control panel with reset/test/alarm/indication function buttons
- Rated insulation voltage Ui=1000V, rated impulse withstand voltage Uimp=12kV
- 4-pole (4P) design with N pole, suitable for three-phase four-wire system
- Complies with national standard GB14048.2, high safety and reliability
- Built-in communication interface (green terminal) for intelligent system integration
Main Technical Parameters
M3EL Series LCD MCCB – Detailed Technical Parameters
| Parameter | M3EL-250Y/4 | M3EL-100Y/4 | M3EL-400Y/4 |
|---|---|---|---|
| Rated Current (In) | 250A (A-class adjustable) | 100A (A-class adjustable) | 400A (A-class adjustable) |
| Rated Operating Voltage (Ue) | AC400V 50Hz | AC400V 50Hz | AC400V 50Hz |
| Rated Insulation Voltage (Ui) | 1000V | 1000V | 1000V |
| Rated Impulse Withstand Voltage (Uimp) | 12kV | 12kV | 12kV |
| Ultimate Breaking Capacity (Icu) | 50kA/1s | 40kA/1s | 65kA/1s |
| Service Breaking Capacity (Ics) | 85kA | 70kA | 90kA |
| Withstand Current (Icw) | 50kA | 40kA | 50kA |
| Leakage Current (IΔn) | 50~1000mA (adjustable) | 30~500mA (adjustable) | 50~1000mA (adjustable) |
| Poles | 4P (with N pole) | 4P (with N pole) | 4P (with N pole) |
| Protection Class | Type B (GB14048.2) | Type B (GB14048.2) | Type B (GB14048.2) |
| Display Type | LCD Digital Screen | LCD Digital Screen | LCD Digital Screen |
M3EL Series – Installation & Operation Guide
M3EL series intelligent MCCB adopts vertical installation, with green communication terminal for connecting to intelligent control system, and functional buttons (reset/test/alarm) for easy operation.
- Installation ambient temperature: -5°C ~ +40°C, humidity ≤90% (no condensation)
- Adjust Ir (rated current) and IΔn (leakage current) via panel buttons according to load demand
- LCD screen displays real-time working status, fault code and electrical parameters
- Red indicator: fault alarm; yellow indicator: leakage alarm
- Complies with JINGE electrical standard, matched with intelligent distribution box
M3EL Series – Typical Applications
Intelligent Industrial Distribution System
High-Rise Building Power Supply
Data Center Auxiliary Power
Three-Phase Four-Wire Power System
High-Safety Industrial Equipment
Commercial Complex Power Distribution