this unit ensures the transfer fan only operates when there is a call for air movement

or an audible hum indicating a capacitor or winding failure

Verify your run capacitor (40uF/440V) and start components before field installation to ensure peak mechanical longevity

Rugged Construction: Rated for NEMA 2/IP54

2-way normally closed solenoid valve designed for heavy-duty HVACR and industrial fluid control

Siemens Industrial Controls 3SU1400-1AA10-1FA0 Control Module 326058-755 this unit ensures the transferThe Siemens 3SU1400 1AA10 1FA0 Control Module is a high reliability SIRIUS ACT contact module designed for front plate mounting in demanding industrial and HVACR environments. This 1NO+1NC contact block provides a bridge between pilot devices and control circuits, featuring a robust screw terminal connection system that ensures secure high vibration resistance. As a veteran grade auxiliary contact module, it supports an operating voltage of up to 500V