The M4185B1058 is a modutrol IV motor that operates at -40 to 150°F ambient temperature range and 24/120/230V allowing fixed torque over the entire voltage range.  It produces 60 Lb-In torque, 30 to 60-second nominal timing, and 90 to 160-degree adjustable stroke.

The two-position spring return motor is used to control dampers or valves in scenarios where it is crucial for the controlled element to revert to its initial position in case of power failure or interruption.  The unit features a die-cast aluminum housing that provides excellent protection.

The M4185B1058 replaces models M445, M845, and M865 motors.  It is designed with a durable NEMA 3 weather protection integral junction box and quick-connect terminals for easy installation.