Broad Compatibility: A direct-fit OEM replacement part for multiple Reznor unit heater series

What is the difference between the 305930 and the 305930/U

Selectable Reset: Adjustable between manual and automatic reset modes to suit specific industrial automation safety protocols

high-tension lead

Siemens Building Technology 331-2929 Actuator 319848-301 Broad Compatibility: A direct-fit OEMThe Siemens 331 2929 Actuator is a heavy duty No. 4 pneumatic damper actuator designed for professional HVACR installations requiring high torque performance. Featuring a 3 7 psi spring range and a standard 4 inch stroke, this unit is engineered for the gradual or positive actuation of large dampers, mixing boxes, and terminal unit air valves. Built with a rugged, all metal body and a replaceable EPDM rolling diaphragm, this pneumatic damper actuator