8751019000 Schneider MD10A Electric Damper Actuator 10Nm Modulating 2-10V NSR 24V AC IP54 Aux Switch

The 8751019000 is the ten newton metre version of the MD series modulating damper actuator, catalogued as MD10A. Designed for larger, stiffer, or more heavily loaded dampers that exceed the capacity of the five newton metre unit, this actuator provides reliable operation under varying pressure conditions and damper bearing loads. It features modulating control with 2 to 10 V DC input, no spring return, IP54 protection, and includes a one-meter factory-fitted lead with integrated volt-free auxiliary switch for position feedback.

Selection between five and ten newton metre actuators depends on damper requirements rather than duct size. Verify the damper manufacturer's torque specifications under actual system pressure conditions. The actuator maintains position during power loss, making it unsuitable for applications requiring automatic closure under fault conditions. The 50-second full stroke time requires appropriate control loop tuning to prevent overshoot and hunting. Auxiliary switch feedback wiring is recommended for applications requiring verified position confirmation.

Ideal for large air handling unit dampers, return and exhaust dampers, mixing box blades, and applications where blade area and pressure demand higher torque. Commonly used in chiller and boiler plant room ventilation, shopping centers, airport terminal riser dampers, and industrial ventilation systems where proportional control and reliable operation under sustained partial closure are required. Compatible with controllers supporting 2 to 10 V DC control signals.