Siemens Industrial Controls 3RT2036-1AC20 Contactor 320788-702 and the critical scroll band

and the critical scroll band (air deflector) required for proper static pressure and airflow direction

The M9220 series provides bidirectional spring return

set point ensures consistent airflow proving without the risk of tampering or incorrect field calibration

With a maximum allowable pressure of 580 psi (40 bar) and a temperature threshold up to 392°F (200°C)

000 CFM airside applications

Siemens Industrial Controls 3RT2036-1AC20 Contactor 320788-702 and the critical scroll bandThe Siemens 3RT2036 1AC20 is a heavy duty SIRIUS power contactor engineered for high demand industrial and HVACR motor switching. Rated for 50A (AC 3) and up to 22 kW at 400V, this 3 pole contactor utilizes a 24VAC 50 60Hz coil to ensure stable actuation in low voltage control circuits. Built on the Size S2 frame, it features screw terminals for secure conductor termination and DIN rail mounting capability for rapid integration into standard control