Siemens Building Technology 331-3012 322838-752 3 series ECM

3 series ECM

the HC21ZE126 is the official direct replacement for the HC21ZE126A

Utilizing high-quality epoxy encapsulated construction

Does it matter which way the motor rotates

Siemens Building Technology 331-3012 322838-752 3 series ECMThe Siemens 331 3012 is a heavy duty #6 pneumatic damper actuator designed for high torque applications in commercial HVAC systems. This spring return actuator features a 4 inch stroke and a nominal 3 8 psi spring range, making it an ideal choice for the gradual or positive control of large dampers, centrifugal refrigeration inlet vanes, and fire smoke dampers. Built with a rugged, metal fabricated housing and a 17. 9 sq. in. effective diaphragm area,