KMC Controls MEP-3503 Actuator

The KMC Controls MEP-3503 Actuator is a precision-engineered 24VAC zone actuator designed for high-reliability on/off control in HVAC systems. Built with an internal spring return (S/R) mechanism, this normally open (N/O) unit ensures a fail-safe position during power loss, making it a staple for critical dampening and VEZ series valve applications. For technicians, the MEP-3503 provides a streamlined installation with its compact 2-position design, allowing for seamless replacement in commercial building automation or residential zoning environments. Operating on a standard 24v power supply, it delivers consistent torque to maintain proper airflow or fluid flow as directed by the controller. Its rugged construction is tailored for the demands of constant cycling, ensuring that HVAC contractors can minimize callbacks. Whether you are retrofitting existing zone control valves or integrating into a new discharge air setup, this actuator provides the mechanical integrity needed for long-term operational efficiency.

• Fail-Safe Security: Integrated spring return functionality ensures the actuator returns to the normally open position during power interruptions.
• Optimized Compatibility: Specifically designed for KMC VEZ series valves, ensuring a perfect mechanical fit and reliable linkage.
• Technical Reliability: Simple 2-position on/off control logic reduces board-level programming complexity for faster field commissioning.
• Versatile Application: Suitable for both damper and valve control, providing flexibility across diverse heating and cooling configurations.

• Is the MEP-3503 compatible with 24VDC systems? This specific model is rated for 24VAC input; always verify your transformer output before wiring to prevent component damage.
• How does the "Normally Open" function work? Upon loss of power, the internal spring return mechanically drives the actuator to the open state, which is critical for preventing coil freeze-up or maintaining ventilation.
• Can this actuator be used on third-party valves? While optimized for KMC VEZ valves, it can be adapted to systems requiring a 2-position 24v actuator with similar mounting footprints.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.