The Schneider LA9FL4K4J is a mechanical interlock from the TeSys F range, designed to physically prevent simultaneous closure of two contactors in a reversing or changeover circuit. It mounts in a 3-vertical configuration and interlocks specific bottom, middle, and top contactors: bottom LC1F400 2P/3P/4P or CR1F400 3P/4P; middle LC1F500 2P/3P/4P or CR1F500 3P/4P; top LC1F630 3P/4P, LC1F800 3P, or CR1F630 3P/4P.
Fit confirmation for the panel
It interlocks only the specific TeSys F contactor models listed — verify your contactor frame (LC1F400/500/630/800 or CR1F400/500/630) and pole count (2P, 3P, or 4P) against the compatibility table before committing the BOM line.