KMC Controls MEP-4551 Actuator

The KMC Controls MEP-4551 is a robust 24VAC damper actuator engineered for reliable two-position control in demanding HVAC systems. Delivering a focused 45 in-lb torque, this unit provides high-performance actuation for HVAC dampers and valves requiring a fail-safe return-to-zero position upon power loss. This model serves as the designated direct replacement for MEP-5374 and MEP-5324, allowing for seamless mechanical integration and control logic continuity. Designed for longevity in commercial environments, the KMC MEP-4551 utilizes a brushless DC motor and a reinforced gear train to ensure consistent damper automation and HVAC control accuracy. Its compact footprint facilitates installation in tight mechanical headers, while the standardized electronic actuator wiring simplifies retrofits. This 2-position actuator is the industry standard for maintaining airflow integrity and safety configurations in air handling units and zone control systems.

• Direct Retrofit Compatibility: Engineered as a drop-in replacement for MEP-5374 and MEP-5324, reducing downtime and field modification needs.
• Reliable Fail-Safe Operation: Internal spring return ensures the HVAC damper moves to a safe position during power interruptions.
• High-Torque Performance: Provides 45 in-lb torque, sufficient for medium-sized control dampers and air-mixing applications.
• Energy Efficient 24V Control: Operates on standard 24VAC/VDC power, drawing minimal current for optimized system efficiency.

Can I use the MEP-4551 to replace a failing MEP-5374 unit?
Yes, the KMC Controls MEP-4551 is the official direct replacement for the MEP-5374 and MEP-5324 models, matching their mounting specs and actuator performance.

What is the maximum damper area this 45 in-lb actuator can handle?
With a 45 in-lb torque rating, this unit typically handles dampers up to 10 square feet, though specific duct pressure and seal friction should be verified.

Does this model support floating or modulating control signals?
No, the MEP-4551 is a dedicated 2-position actuator, designed for simple on/off or open/closed HVAC automation sequences.

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.