Description
The Honeywell MS8120A1205 is a high-torque, spring-return damper actuator featuring two-position control and internal auxiliary switches—ideal for HVAC zone control, air-handling units, and UL-rated smoke damper systems. Its combination of reversible mounting, robust build, and clean installation profile delivers reliable performance in demanding commercial and industrial applications.
Specifications:
- Actuator Type: Damper, Valve
- Application Type: HVAC
- Fail Safe Mode: Spring Return
- Control Signal: SPST, 2 Position
- Supply Voltage: 24 Vac +/- 20%
- Number of Internal Auxiliary Switches: 2
- Switch Ratings: 250 Vac, 5 A res (3 A ind)
- Shaft Adapter Type: Self Centering clamping
- Manual Operation: Manual Crank
- Mounting: Direct Coupled
- Frequency: 60 Hz, 50 Hz
- Rotational Stroke: 95 ¬+/- 3 degrees
- Rotational Stroke Adjustment: Mechanically limited 5 degree increments
- Spring Return Direction: By orientation
- Timing, Maximum Spring Return (sec): 20 sec
- Timing, Nominal Driving @ 60 Hz (sec): 45 Sec
- Spring Return Direction: By orientation
- Dimensions (in.): 9.72 in high x 3.94 in wide x 2.95 in deep
- Compatible Damper Shafts (in.): 3/8 to 1.06 in. round or 3/8 to 11/16 in. square
- Temperature Range, Ambient (F): -40 F to 140 F
- Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
- Includes: Mounting bracket, self-centering shaft adapter, 3mm crank
