The Schneider Electric TA10D3S0804TPE is an automatic transfer switch from the TransferPacT series, rated 80 A continuous with 3 poles (3P) for 400 V AC at 50/60 Hz networks. It is a PC-class switch per IEC 60947-6-1, meaning it is designed for full-rated switching of both normal and emergency power sources without relying on separate overcurrent protection for the transfer function itself. The rotary knob selector gives you manual override for testing or maintenance, and the mechanical interlocking prevents both sources from closing simultaneously — a hard requirement for any changeover application.
Rated operational current (Ie) is 80 A, and the conventional free-air thermal current (Ith) is also 80 A at 60 °C — so no derating headache at typical panel ambient temperatures. The short-time withstand (Icw) is 5 kA for 0.1 s, which governs coordination with upstream protective devices; the short-circuit making capacity (Icm) is 15 kA for the switch-disconnector alone at 400 V AC, or 75 kA when paired with an upstream circuit breaker. The front face carries IP40 in auto mode (finger-safe), while the inside of the enclosure is IP20 in manual mode — plan your enclosure seal accordingly if the panel sees washdown.
Both upside and downside connections are screwed terminals — no special tooling needed, but budget for torque-checking during commissioning.