16-channel AC output for S7-300 racks
The Siemens 6ES7322-1EH00-0AA0 is an SM 322 digital output module providing 16 optically isolated outputs, each rated AC 120V/0.5A, designed for the S7-300 PLC platform.
EOL lifecycle — sourcing reality
Sourcing is limited to surplus, broker, or last-time-buy inventory.
What the 0.5A per channel means for the panel
Each of the 16 outputs switches AC loads up to 0.5A at 120V — suitable for pilot lights, contactor coils, solenoid valves, and small relays in a control cabinet. The optical isolation separates the backplane logic from the field wiring, preventing ground loops from coupling into the S7-300 rack.