The Schneider Electric TA16D3L0804TPE is a TransferPacT automatic transfer switch (ATS) rated for 80 A at 400 V AC, 50/60 Hz, with 3 poles. It is designed to change the source of supply — typically switching between a primary utility feed and a backup generator or secondary feeder — in uninterrupted duty. The PC-class switch (per IEC 60947-6-1) means it is intended for use as a stand-alone transfer switch, not a combined switch-disconnector with overcurrent protection; the fault clearing is handled by upstream breakers. The short-time withstand current (Icw) of 10 kA for 0.1 s tells you the switch can hold closed through a fault until an upstream breaker clears — critical for coordination studies. Mounting is fixed to a plate or DIN rail; the connection pitch is 30 mm, and both line and load terminations are screwed. The front face carries an LCD screen and 4 push-buttons for local control and status reading. Operating mode can be set to automatic or manual, and a mechanical interlock prevents both sources from closing simultaneously.
The IP40 front face (auto mode) and IP20 inside the enclosure (manual mode) mean the switch is suitable for installation inside a standard electrical enclosure — not for outdoor or washdown locations. The impulse withstand voltage (Uimp) of 8 kV on the switch and 6 kV on the controller matches typical surge-withstand requirements for distribution panels per IEC 60947-1. Utilization category AC-33B covers switching of mixed loads including motors, resistive, and lighting — the most common commercial/light-industrial transfer switch duty. The mechanical durability of 10,000 cycles is standard for this class; expect the switch to outlast the building's service life under normal weekly testing.