Honeywell Commercial MS4120A1001 Damper Actuator

Damper Actuator solution: The Honeywell MS4120A1001 Damper Actuator delivers precise, 2-position SPST control for HVAC systems. Its spring-return operation and built-in manual crank ensure quick, reliable damper positioning, even during power interruptions. Operating from 100 to 250 VAC at 50/60 Hz, it covers most commercial HVAC setups with a compact, rugged design.

Constructed with an aluminum body and a NEMA 2 enclosure, this actuator withstands challenging environments. It delivers 175 in‑lb of torque across a 95-degree travel, providing accurate modulation for resilient airflow control. The shaft accepts 3/8" to 1.06" diameters for flexible duct mounting, and the overall size is 3.94" W x 2.95" D x 9.72" H.

• Type: SPST, Direct Coupled, 2-Position
• Operation: Spring Return with Manual Crank
• Voltage / Frequency: 100–250 VAC, 50/60 Hz
• Power: 60 VA Driving, 13 VA Holding
• Torque & Travel: 175 in-lb, 95° rotation
• Enclosure & Mounting: NEMA 2, Aluminum body, 3/8"–1.06" shaft
• Environment: -40°F to 140°F operating temps
• Applications & Compliance: HVAC system, UL 873, CUL C22.2, CE, C-Tick
• Connection: Enclosed screw terminal strip
• Timing: 45 seconds