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Schneider Electric LA9FL4J4J — Motor Control Accessories

TeSys LA9FL4J4J Mechanical Interlock, Obsolete — Sourced to

MPNLA9FL4J4J
Obsolete

TeSys F LA9FL4J4J mechanical interlock, for 3 vertical contactors, LC1F400/CR1F400/LC1F630/LC1F800, obsolete.

Schneider Electric LA9FL4J4J datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LA9FL4J4J — Identification
ParameterValue
Product / component typeMechanical interlock
Accessory categoryInterlocking accessory
Product rangeTeSys
LA9FL4J4J — Other specifications
ParameterValue
Device short nameLA9F
Interlocking typeMechanical
Mounting position3 vertical
Interlocked deviceBottom LC1F400 2P or 3P or 4P Bottom CR1F400 3P or 4P Middle LC1F400 2P or 3P or 4P Middle CR1F400 3P or 4P Top LC1F630 3P or 4P Top LC1F800 3P Top CR1F630 3P or 4P

Product details

The LA9FL4J4J is a mechanical interlock from the TeSys F range, designed to physically prevent two contactors from closing simultaneously. It mounts in a 3-vertical configuration and interlocks bottom-position LC1F400 or CR1F400 (2P, 3P, or 4P), middle-position LC1F400 or CR1F400, and top-position LC1F630 (3P or 4P) or LC1F800 (3P) contactors.

The interlock is a mechanical accessory — no wiring, no coil draw. It clips onto the contactor bodies in a vertical stack. The 3-vertical mounting position means the contactors are arranged one above the other on the DIN rail or panel, and the interlock bar connects their moving armatures. Verify the contactor frame sizes against the list (LC1F400, CR1F400, LC1F630, LC1F800) before ordering; the interlock won't fit smaller TeSys F frames.

Frequently asked questions

What contactors does the LA9FL4J4J interlock?

It interlocks bottom and middle positions with LC1F400 or CR1F400 (2P, 3P, or 4P), and the top position with LC1F630 (3P or 4P) or LC1F800 (3P). All contactors must be from the TeSys F range.

What is the mounting arrangement for this interlock?

It mounts in a 3-vertical configuration — three contactors stacked vertically. The interlock bar connects the moving parts of the top and middle contactors, and the middle and bottom contactors.

How do I source the LA9FL4J4J if it's obsolete?

Submit an RFQ. This part is sourced to order through surplus or new-old-stock channels. No stock or lead time is quoted here; the RFQ will confirm availability and price.

MPN
LA9FL4J4J