The M9300 Series Electric Non-Spring Return Actuators provide control of dampers in HVAC systems. Actuators in this series provide rated torques from 8 N·m to 35 N·m.

The series consists of models for on/off and floating control as well as models with Automatic Signal Input Detection, which allows automatic recognition of input signals for on/off, floating, and proportional control.

These actuators are configured for direct mounting and do not require damper linkage. Actuators can be mounted directly with a universal clamp to a round damper shaft from 10 mm up to 27 mm, and to a square damper shaft from 10 mm up to 19 mm.

An accessory crankarm and remote mounting kit are available for applications where the actuator cannot be direct-coupled to the damper shaft. An optional line voltage auxiliary switch kit can be field installed to indicate an end-stop position or perform switching functions within the selected rotation range.