KMC Controls MEP-4552 Proportional Fail-Safe Actuator 45 in-lb 24VAC/VDC

The KMC Controls MEP-4552 is a compact yet powerful direct-coupled ControlSet actuator designed to provide proportional control for dampers or valves in HVAC systems. This fail-safe model delivers 45 in-lb of torque over a 95-degree angular rotation, making it ideal for precise control of small to medium-sized dampers and valves.

Key Features:

• Proportional control with 2-10 VDC or 0-10 VDC control signal input compatibility
• Capacitor-driven fail-safe with switch-selectable direction provides consistent torque in both powered and fail-safe modes
• Patented noise reducer ensures whisper-quiet operation (less than 35 dBA at 1 meter)
• Anti-jitter circuitry significantly reduces hunting and unnecessary wear on actuator and damper components
• Switch-selectable voltage feedback output (0-5 or 0-10 VDC, or 1-5 or 2-10 VDC) proportional to actuator position
• User-initiated auto-mapping feature for more precise equipment control by reassigning input signal range
• Fast rotation: 95-degree travel in 35 seconds or less
• Direct mounting to 1/4" to 5/8" round shafts or 1/4" to 7/16" square shafts eliminates need for linkages
• Gear disengagement button allows easy manual positioning
• Non-rotation bracket included to prevent lateral movement

The MEP-4552 accepts control signals from thermostats, controllers, or building automation systems, making it a versatile solution for precise HVAC control applications. UL listed and backed by a 5-year manufacturer warranty.