Honeywell ML4135 User Manual
Application, Features, Applicable literature
63- 2567- 3
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Copyright © 2000 Honeywell • All Rights Reserved
ML4125, ML4135, ML8125, ML8135
Fast-Acting, Two-Position Actuators
FOR HEATING, VENTILATION AND
The ML4125, ML4135, ML8125 and ML8135 Fast-Acting,
Two-Position Actuators are spring return direct coupled
actuators (DCA) with an integral junction box for on/off
damper control. The actuator accepts an on/off signal from
a single-pole, single-throw (spst) controller. Models are
available with clockwise (cw) or counterclockwise (ccw)
spring return and are designed for heating, ventilation, and
air-conditioning (HVAC) applications.
This actuator is not to be used in fire/smoke
applications requiring UL555/555S approval.
Integral spring return.
-40 to 130°F (-40 to 54°C) operating temperature range.
No audible noise during holding.
Electronic circuitry provides efficient operation while
eliminating the need for limit switches.
Ninety-five degree angle of rotation.
Die-cast aluminum housing.
Housing design allows flush mounting to damper.
Integral junction box with three conduit openings
eliminates need for separate wiring box.
Direct mounting to 3/8 or 1/2 in. round or square shaft.
100 lb-in. (11.3 N•m) minimum driving torque.
25 to 40 second drive timing (load dependant).
Models available for 24, 120, and 230 Vac.
40 lb-in. (4.5 N•m) minimum driving torque.
20 to 25 second drive timing (load dependant).
Models available for 24 and 120 Vac.
— Motor/Actuator Selection Guide
for Damper Applications
— Engineering Manual of Automatic Control
(also called The Gray Manual)
— Direct Coupled Actuator
Quick Selection Guide
— Damper Torque Calculator