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Schneider Electric LA9FL4J4G — Motor Control Accessories

Schneider TeSys LA9FL4J4G Mechanical Interlock, 3 Vertical C

MPNLA9FL4J4G
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Schneider Electric TeSys F, LA9FL4J4G, mechanical interlock for 3 vertical contactors, mechanical interlocking type.

Schneider Electric LA9FL4J4G datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LA9FL4J4G — Identification
ParameterValue
Product / component typeMechanical interlock
Accessory categoryInterlocking accessory
Product rangeTeSys
LA9FL4J4G — Other specifications
ParameterValue
Device short nameLA9F
Interlocking typeMechanical
Mounting position3 vertical
Interlocked deviceBottom LC1F185...LC1F225 3P or 4P Bottom CR1F185 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 LA9FL4J4G is a mechanical interlock accessory from the TeSys F range, designed to prevent simultaneous closure of three contactors mounted vertically. It physically blocks the armature of one contactor from closing when another is engaged, which is critical for reversing drives, star-delta starters, or any circuit where two power paths must never be energized at the same time.

This interlock mounts in a 3-vertical stack and works with bottom-position LC1F185 through LC1F225 3P or 4P contactors, middle-position LC1F400 2P/3P/4P, and top-position LC1F630 3P/4P or LC1F800 3P contactors. It also interlocks the corresponding CR1F reversing contactors in the same frames.

Frequently asked questions

What contactors does the LA9FL4J4G interlock?

It interlocks three vertically stacked contactors: bottom LC1F185–LC1F225 (3P or 4P), middle LC1F400 (2P, 3P, or 4P), and top LC1F630 (3P or 4P) or LC1F800 (3P). It also works with the corresponding CR1F reversing contactors in those frame sizes.

What is the interlocking type on the LA9FL4J4G?

Mechanical interlocking. It uses a physical linkage between the contactor armatures to prevent simultaneous closure.

MPN
LA9FL4J4G