The Schneider Electric LA1LC052E is a remote electrical reset device from the TeSys range, designed for use with TeSys integral starters. It allows remote resetting of a tripped starter via a 48 V AC control signal, without needing to open the enclosure.
Control voltage and fit
The control circuit voltage is 48 V AC at 50/60 Hz, with a secondary tap at 42 V AC 50 Hz. That means it's wired to a separate control transformer or a 48 V AC supply — not the motor line voltage. If your panel runs a 24 V DC control bus, this part won't drop in without an additional AC supply.