Siemens Industrial Controls 3RT2025-1AV60 Contactor 321894-709 the 4PST configuration is frequently

the 4PST configuration is frequently used by technicians to switch all three legs of a 3-phase motor

fitting standard 1/2" x 7/8" connections common in Trane assemblies

or musty odors indicating that the sloped bottom is no longer directing water to the primary line

confirm 24Vac at the power terminals and check the damper plug connection

Mounting: Side-by-side mounting compatibility with standard Eaton D15 accessories and enclosures

Siemens Industrial Controls 3RT2025-1AV60 Contactor 321894-709 the 4PST configuration is frequentlyThe Siemens 3RT2025 1AV60 Sirius Contactor is a heavy duty 3 pole IEC magnetic contactor engineered for demanding industrial motor control systems. As a Size S0 frame unit, it serves as the direct dimensional and electrical successor to the legacy 3RT1025 1AV60 series. This 16 Amp contactor is optimized for AC 3e AC 3 motor applications, supporting loads up to 10 HP at 460V or 7. 5 kW at 400V. It features a robust 480V AC 60Hz coil designed to