KMC Controls MEP-5071 Tri-State Damper Actuator 24VAC 50 in-lb 60°/min Non-Failsafe

The KMC Controls MEP-5071 is a direct-coupled tri-state damper actuator designed for precise control of small dampers in HVAC applications, including air terminal unit dampers and VAV systems. This UL-recognized actuator features a fast 60-degree-per-minute rotation speed and delivers reliable, maintenance-free operation in commercial and industrial building automation systems.

Key Specifications:

• Supply Voltage: 24 VAC (+20%/-15%), Class 2
• Torque Output: 50 in-lbs (5.7 N·m) minimum
• Rotation Speed: 60°/minute at 60 Hz, 50°/minute at 50 Hz
• Angular Rotation: 0° to 95° with adjustable end stops
• Control Input: Tri-state (3-wire floating control)
• Maximum Power Consumption: 2 VA

Features and Benefits:

• Direct mounting to 1/2-inch or 3/8-inch diameter damper shafts (3/8-inch requires HFO-0011 adaptor, sold separately)
• Bi-directional motor operation controlled via SPDT floating thermostat or building automation system
• Adjustable minimum and maximum end stops for precise positioning limits
• Gear disengagement button for manual positioning without power
• Includes non-rotation bracket to prevent lateral movement
• Flame retardant plastic housing for durability
• Operating temperature range: 0°F to 120°F (-18°C to 49°C)
• Wire clamp connections accept 14-22 AWG copper wire

Optional Field-Installed Accessories:

• CME-2003: Rotary feedback potentiometer (10K ohm, three-wire)
• CME-1002/1004: Single or double SPDT auxiliary switches
• HCO-1151: Weather enclosure for outdoor applications

The MEP-5071 eliminates the need for expensive and complicated linkages with its direct-mount design, making installation quick and straightforward. Its non-failsafe (non-spring return) design maintains position on power loss, making it ideal for applications where fail-in-place operation is preferred.