The Schneider LA9FL4L4F is a mechanical interlock from the TeSys F range, designed to prevent two contactors from closing simultaneously — a standard requirement for reversing or changeover motor starters where a short-circuit across phases would otherwise occur. It mounts in a 3-vertical configuration and physically blocks the armature of one contactor when the other is engaged. The interlock works with bottom-mounted LC1F115 through LC1F150 (3P or 4P) and CR1F150 (3P or 4P), top-mounted LC1F630 (3P or 4P) and LC1F800 (3P), and middle-mounted LC1F630 (3P or 4P), LC1F800 (3P), and CR1F630 (3P or 4P).
If your BOM line calls for the LA9FL4L4F, the procurement path is a last-time-buy or a broker search. We can quote against an RFQ — the supply posture is quoted-to-order, not off-the-shelf.