The Siemens 6SL3300-7TH41-3AA0 is a SINAMICS S120 Active Interface Module (AIM) paired with an Active Line Module (ALM) for 1100/1400 kW drives on 660-690 V three-phase mains. It handles 1270 A continuous line current in a chassis IP00 format with internal air cooling, and ships with the DRIVE-CLiQ cable for the control link. This is the interface that conditions the incoming supply for the ALM — without it, the line module has no feedback or precharge path.
What the ratings mean for fit
The 1270 A rating at 660-690 VAC sets the continuous current the AIM must pass between the mains and the ALM. For a 1400 kW drive on a 690 V line, that current aligns with the full-load draw of the inverter section. The IP00 chassis means it is a panel-mount unit — no enclosure, no touch protection — so it goes into a cabinet with adequate clearance and forced airflow. Internal air cooling handles the thermal load, but the cabinet must supply the air path; derate if ambient exceeds 40 °C.
Lifecycle and sourcing reality
Siemens lists this AIM at a mature lifecycle stage — meaning it is a stable, long-running product, not newly introduced and not flagged for phase-out. No last-time-buy or successor has been announced through official channels. For a BOM line at 660-690 V, this is the current production part; it is sourced and quoted to order against an RFQ through independent distribution, with availability and current pricing confirmed at quote time.
Where it fits in the system
In a SINAMICS S120 common DC-bus configuration, the AIM sits between the mains filter and the ALM. It houses the precharging circuit, the line-side voltage sensing, and the DRIVE-CLiQ interface that reports back to the Control Unit. The DRIVE-CLiQ cable included with the module connects directly to the ALM's X1 port. Mount the AIM close to the ALM to keep the DC bus bars short; the chassis unit bolts into a standard 19-inch cabinet frame.