AHU

Specifically designed to control and protect all electrical components of an AHU: blower motors, heaters, dampers, filters, sensors, and sometimes humidifiers.
Ensures automated operation, monitoring, and interlocking of components for energy-efficient HVAC performance.
Includes DOL starters, star-delta starters, or Variable Frequency Drives (VFDs) for fan speed control.
Provides overload protection, soft starting, and fan speed modulation based on system demand.
Interfaces with temperature, humidity, pressure sensors, and actuators for dampers and valves.
Supports PID logic and feedback loops to maintain precise environmental control.
Integrated PLC or microcontroller-based logic for system sequencing, fault detection, and automation.
Often equipped with timers, relays, or BMS-compatible interfaces (Modbus, BACnet, etc.).
Includes overload relays, MCBs/MCCBs, emergency stop, phase failure relays, and isolation switches.
Fire mode or shutdown logic is often built-in for integration with fire alarm systems.
Provides digital display or touchscreen (HMI) for real-time monitoring of temperature, motor status, and alarms.
Local or remote control enabled via BMS.
Typically IP42–IP55 rated for indoor use.
Constructed with powder-coated CRCA steel or stainless steel depending on environment.

Manages all AHU operations from one panel — simplifies installation and maintenance.
With VFD integration and smart sensors, it reduces energy usage by modulating fan speed.
Enables accurate control of temperature, humidity, and airflow, ensuring comfort and compliance.
Fault indication, alarms, and logging help in quick diagnosis and maintenance.
Prevents motor and system damage through overload, short circuit, and phase protection.
Easily integrates with Building Management Systems for remote monitoring and automation.
Tailored for specific AHU sizes, motor ratings, and functional requirements (e.g. VAV, CAV, fresh air units).
Interfaces with fire alarm systems to shut down fans or switch to smoke extraction mode.