The LUCA12FU is Schneider Electric’s TeSys Ultra standard control unit that is inserted into TeSys U power bases (LUB12, LUB32, LUB38) to form a TeSys U starter controller for three‑phase motors. It handles 3 A to 12 A and uses a control circuit voltage of 110–220 V AC/DC (class 10). The unit provides overload and short‑circuit protection for the downstream motor and, when combined with the LUB12/LUB32/LUB38 bases, supports three‑phase motor applications up to 5.5 kW at 400 V.
