Description
Honeywell MS4620F1203 Fast Acting Two Position Actuator Overview
The Honeywell MS4620F1203 is a heavy-duty, fast-acting two-position damper actuator engineered for reliable performance in commercial HVAC damper control applications. Designed to operate on a 230Vac power supply with an SPST control signal, this actuator delivers precise, repeatable positioning for air handling and ventilation systems.
Key Features
- Operating Voltage: 230Vac
- Control Signal: Two-position, SPST
- Torque Output: 175 lb-in for dependable damper actuation
- 2 Internal Auxiliary Switches for system feedback and interlocking
- 15-Second Nominal Driving Time for fast response
- 15-Second Maximum Spring Return for fail-safe operation
- Rotational Stroke: 95 ± 3 degrees for accurate damper positioning
- NEMA 2 enclosure rating for protection against dripping water
Performance & Design
The MS4620F1203 features a robust spring-return mechanism that ensures the damper returns to its fail-safe position in 15 seconds or less in the event of a power loss, making it ideal for life-safety and energy management applications. The 175 lb-in torque output is suited for medium to large damper assemblies, and the 95-degree rotational stroke provides full-range damper control.
Auxiliary Switches
Two internal auxiliary switches are included, enabling end-of-travel signaling, equipment interlocking, and system status feedback — reducing the need for external switching components and simplifying panel wiring.
Enclosure & Installation
- NEMA 2 rated enclosure for indoor installations where dripping water may be present
- Compact, rugged housing suitable for mechanical room and air handler unit mounting
- Compatible with standard damper shaft configurations
Typical Applications
- Commercial air handling units (AHUs)
- Outside air and exhaust damper control
- Smoke and fire control damper actuation
- Building automation and HVAC zoning systems
