Features：
Intelligent Protection: The Micrologic electronic trip unit provides three/four-stage protection, supporting selective coordination to reduce the scope of power outages; optional Vigi leakage protection adapts to personal and equipment safety requirements.
Breakdown and Current Limiting: High current limiting design (L/U level) quickly cuts off faults, reducing short-circuit energy surges and improving system safety.
Digitalization and Interconnectivity: Supports Modbus, Profibus, and other communication protocols, connecting to the EcoStruxure platform for remote monitoring, fault location, and energy efficiency analysis.
Installation and Maintenance: Hot-swappable pull-out installation facilitates maintenance; modular accessories (auxiliary/alarm contacts, shunt/undervoltage trip) can be added on-site to adapt to control requirements.
Energy Measurement: The A/E type trip unit incorporates a dual-core current transformer to measure parameters such as I/U/P/E/THD; the FDM121 cabinet door display unit can display data locally/remotely.
Typical Applications：
Industrial Sector: Factory secondary power distribution, busbar interconnection, high-capacity motor circuits; L/U level adaptability for high short-circuit levels.
Public and Commercial Buildings & Data Centers: Building power distribution trunk lines, power circuits for air conditioning/water pumps, etc.; withdrawable design for easy maintenance; four-stage protection ensures power supply continuity.
Infrastructure: Critical loads such as rail transit, airports, and hospitals; intelligent monitoring and selective protection enhance power supply reliability.
Other Scenarios: Backup power switching, photovoltaic/energy storage combiner; adaptable to DC and special voltage systems (e.g., 690V AC).
