Honeywell MS4620F1203 Two-Position Actuator

Honeywell MS4620F1203 Two-Position Actuator. Spring return direct coupled actuators (DCA) for on/off damper control with an integral junction box. The actuator accepts an on/off signal from a single-pole, single-throw (SPST) controller. They are designed to operate reliably in smoke control systems requiring Underwriter's Laboratories Inc. UL555S ratings up to 350 F. 175 lb-in. (20 Nm) minimum driving torque at 350F (176C). Integral stainless steel spring return ensures level of return torque. Reversible mounting allows actuator to be used for either clockwise (cw) or counterclockwise (ccw) spring rotation. Fifteen-second spring return timing. No special cycling required during long-term holding. No audible noise during holding. Patented design eliminates need for limit switches and reduces power consumption. Models available with integral high temperature (350 F) SPST position-indicating switches (<7 degrees, >85 degrees). High temperature Teflon® lead wires. Ninety-five degree angle of rotation for tight damper closure. Actuator holds rated torque at reduced power level. Die-cast aluminum housing. Housing design allows flush mounting to damper. High-temperature indicator included. Self-centering shaft adapter (SCSA), patented.