Description
The Schneider Electric (Barber Colman) MS4D-7033-100 is a direct-coupled, spring-return damper actuator engineered for precise modulating control in commercial HVAC and building automation applications. Powered at 24V and accepting a 2–10 VDC proportional control signal, this actuator delivers reliable, repeatable damper positioning for air handling units, VAV systems, and ventilation dampers.
Key Features
- 24V AC/DC supply voltage for broad system compatibility
- 2–10 VDC proportional control signal for accurate modulating operation
- 30 in-lb torque output — suitable for medium-duty commercial damper applications
- Spring-return (SR) fail-safe mechanism ensures damper returns to a defined position on power loss
- 10-foot (10′) factory-attached cable for flexible installation reach
- Direct-coupled design eliminates the need for crank arms or linkages
- Compact, robust housing designed for long service life in demanding HVAC environments
Applications
- Air handling units (AHUs)
- Variable air volume (VAV) systems
- Outdoor air and exhaust dampers
- Commercial building automation and energy management systems
- Ventilation control in light commercial and institutional buildings
Product Specifications
- Brand: Schneider Electric (Barber Colman)
- SKU / Part Number: MS4D-7033-100
- Supply Voltage: 24V
- Control Signal: 2–10 VDC (proportional/modulating)
- Torque: 30 in-lb
- Actuator Type: Spring Return (SR)
- Cable Length: 10 feet (factory-attached)
- Mounting: Direct-coupled
The MS4D-7033-100 is a trusted choice for HVAC contractors and building automation professionals who demand dependable spring-return performance and accurate proportional control. Its factory-attached 10-foot cable simplifies wiring in tight mechanical spaces, while the spring-return mechanism provides essential fail-safe protection for life-safety and energy-code compliance.
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