Schneider Electric (Barber Colman) MS51-7103-100 Proportional Actuator S/R 2-10 VDC 105 in-lb- 24V

The Schneider Electric (Barber Colman) MS51-7103-100, commonly referred to as PROP 105, is a 24-volt proportional control module intended for accurate and effective HVAC system operation. It controls a number of variables, such as pressure, temperature, and airflow, using a 0–10V DC signal. The MS51-7103-100 uses this signal as a reference point and modifies the attached devices (such as variable speed drives and dampers) to reach the required level. It has many advantages and is compatible with many HVAC systems, such as rooftops, chillers, and packaged units. These include decreased wear and tear on equipment because of smoother operation, more comfort through precise control, and increased energy economy through equipment optimization. Because of its compact design and easy installation, it is also a versatile solution for a variety of applications.