Honeywell Commercial MS4110A1200 Damper Actuator

The Damper Actuator for commercial HVAC is the Honeywell MS4110A1200 Damper Actuator, a 2-position SPST direct-coupled unit designed for reliable spring-return operation with a manual crank override. This rugged component fits HVAC systems requiring precise damper control and easy serviceability.

Key specifications ensure robust performance across environments: operates on 100–250 VAC at 50/60 Hz, delivering 88 in-lb of torque with a 95° travel, and supports shaft diameters from 3/8 to 1.06 inch. The durable aluminum body is housed in a NEMA 2 enclosure, ideal for ambient temperatures from -40 to 140 °F. Driving power is 45 VA with a 13 VA holding, and timing is 45 seconds per actuation. The unit includes two auxiliary switches and uses an enclosed screw-terminal strip for reliable electrical connections. It is UL 873, CUL C22.2, CE, and C-Tick approved for commercial use.

• SPST, direct-coupled, 2-position damper control
• Spring-return operation with manual crank override
• Voltage: 100–250 VAC; 50/60 Hz; torque 88 in-lb; 95° rotation
• NEMA 2 enclosure; aluminum body; shaft 3/8 to 1.06 inch
• Includes two auxiliary switches; enclosed screw-terminal connections
• Approvals: UL 873, CUL C22.2, CE, C-Tick