MEP-7551 | Damper Actuator | 180 in-lb | Electronic Fail-Safe | 24V | Floating | KMC Controls

The KMC Controls MEP-7551 is a powerful and versatile actuator designed to provide precise control and reliable operation in industrial applications. With its 24v DC power supply, 180inlbs torque capacity, and 90-115sec run time, the MEP-7551 is capable of handling even the most demanding tasks. The FailSaf feature ensures that the actuator will fail to a safe position in the event of a power loss, providing added safety and peace of mind. Engineered to meet the highest standards of quality and durability, the MEP-7551 boasts a rugged construction that is built to withstand harsh industrial environments. Our HVAC supply store offers the MEP-7551 at competitive prices and ensures fast shipping to minimize downtime. Invest in the KMC Controls MEP-7551 and experience the difference that superior quality and performance can make in your industrial operations.

These powerful, efficient, durable, direct-coupled actuators provide tri-state or proportional control for large control air dampers or valves in HVAC systems. A minimum torque of 180 or 320 in-lb. is available over the 94° angular rotation. Capacitor-driven fail-safe models provide durable, efficient operation with switch-selectable fail direction.

The proportional actuator models accept a 0–10 VDC, 2–10 VDC, or 4–20 mA control signal input from a thermostat, controller, or building automation system. “Anti-jitter” circuitry significantly reduces hunting and needless wear on the actuator and valve packing or damper components (from unnecessary miniscule position changes caused by undamped analog input signals). A user-initiated, auto-mapping feature provides more precise equipment control by reassigning the (0–10 VDC, 2–10 VDC, or 4–20 mA) input signal range over a reduced rotation range (from 45° to 94°). Proportional input models also feature a switch-selectable, voltage feedback output that is proportional to the actuator position. With the 0–10 VDC input, feedback options are 0–5 or 0–10 VDC, and with 2–10 VDC or 4–20 mA inputs, feedback options are 1–5 or 2–10 VDC.

The tri-state models are designed for use with floating thermostats, controllers, or building automation systems. They feature an optional 10K ohm (±10%), three-wire potentiometer feedback output. Fail-safe models also allow two-position control as well.

All actuators mount directly on 3/8″ up to 1.05″ round or 5/16″ up to 5/8″ square shafts, eliminating the need for expensive and complicated linkages. A non-rotation bracket, to prevent lateral movement, is included with each actuator. A gear disengagement button allows manual positioning of the damper and/or gear train without energizing the actuator. Removable terminals and 1/2″ NPS conduit fittings make wiring easier. The actuators are protected against overloading and do not require end or limit switches.

(If lower torque is required, see also the MEP-4200/4500/4900 series.