What this ATS delivers for a 100 A changeover
The Schneider Electric TA10D3L1004TPE is a TransferPacT automatic transfer switch (ATS) rated for 100 A at 400 V AC, 50/60 Hz, in a 3-pole configuration. It shifts a load between two supply sources — utility and generator, typically — without exposing the load to a simultaneous connection. The PC-class switch (per IEC 60947-6-1) means the contacts are rated for making and breaking load current, not just isolation, and the unit carries a suitability-for-isolation tag. That AC-32B utilization category covers mixed resistive and motor loads up to the 100 A mark, so it handles lighting, HVAC, and moderate motor circuits in a commercial or light-industrial panel. The short-time withstand current (Icw) is 5 kA for 0.1 s, and the short-circuit making capacity (Icm) hits 15 kA on its own at 400 V AC; with an upstream protection circuit breaker that figure jumps to 75 kA. That gives the panel designer headroom for coordination studies without oversizing the ATS.
The 310 mm width, 147 mm height, and 94 mm depth fit a standard distribution panel footprint; the 18 mm pitch matches common busbar and terminal-block spacing. Both upside and downside connections are screwed terminals — no special tooling required, but factor in torque wrench access during panel build. Front-face IP40 in auto mode keeps tools and fingers out; inside the enclosure, manual-mode IP20 is acceptable for a locked panel. The mechanical interlocking prevents both sources closing simultaneously — a hard-wired safety interlock, not a software one. Signal contacts come as 1 NO + 2 NC, 1 NC + 2 NO, or 2 NO — configurable for remote status indication to a PLC or BMS.