Siemens Building Technology 331-3002 Kit 328140-751 featuring a Single Pole Single

featuring a Single Pole Single Throw (SPST) internal switch that breaks the circuit on a temperature rise

This part is commonly found in Daikin and McQuay RoofPak systems and various air handling units requiring an 8-inch diameter wheel for effective air circulation

In 3-way configurations

If the system detects a drop in static pressure—often caused by blocked vents

including R-410A units

Siemens Building Technology 331-3002 Kit 328140-751 featuring a Single Pole SingleThe Siemens Building Technology 331 3002 Kit features the No. 4 Pneumatic Damper Actuator, a rugged, metal fabricated powerhouse engineered for precision air flow control in commercial HVAC systems. This piston type pneumatic actuator is designed for the gradual or positive actuation of HVAC dampers and fire smoke dampers, offering a consistent 4 inch stroke. Operating within a 5 10 psi spring range, it provides the necessary force for reliable mixing