Description
Technical Architecture & Functional Positioning
(≈450 words)
The HEEM-2 MSU-112N functions as a compact yet high-capacity motor starter and protection module designed for industrial AC motor applications. Positioned at the motor control layer, it directly interfaces with the motor supply and provides both starting functionality and protective logic to prevent overload, short circuits, and phase imbalances.
The module integrates a thermal-magnetic trip unit for overload protection and a fast-acting electronic trip element for short-circuit detection. Phase-loss monitoring ensures motors are disconnected in the event of single-phase failure, preventing thermal stress and rotor damage. The combination of these features ensures reliable protection for medium-voltage AC motors across manufacturing, HVAC, water treatment, and process automation applications.
Control logic is executed via auxiliary circuits that accept 24–220 VAC/DC signals for start/stop commands and provide feedback to supervisory control systems. This makes the HEEM-2 MSU-112N suitable for integration into MCC (Motor Control Centers) and fully automated production lines. The module’s modular design allows engineers to scale capacity or replace individual units without redesigning the entire motor control assembly.
The robust construction includes high-current busbars, reinforced screw terminals, and panel-mount chassis design to handle up to 112 A continuous current. Its I²t-based electronic trip function ensures rapid fault clearing while maintaining stability for minor current transients. The module is engineered for long-term durability under industrial environmental conditions, including vibration, temperature fluctuation, and electrical noise, making it highly reliable for both retrofit and new installations.
Typical Application Scenarios
- Industrial AC motor control in conveyor, pump, and fan systems
- Factory automation requiring reliable motor protection and start/stop cycling
- Water and wastewater treatment plant pump and motor control
- HVAC system motor drives for commercial or industrial facilities
- OEM equipment requiring medium-voltage motor starter replacement
- Retrofitting legacy Hyundai motor starter panels to extend operational life
