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Schneider Electric LA9FK4J4G — Motor Control Accessories

Schneider LA9FK4J4G TeSys Mechanical Interlock, Obsolete

MPNLA9FK4J4G
Obsolete

Schneider Electric TeSys F series, LA9FK4J4G, mechanical interlock for 3 vertical contactors, obsolete lifecycle.

Schneider Electric LA9FK4J4G datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LA9FK4J4G — Identification
ParameterValue
Product / component typeMechanical interlock
Accessory categoryInterlocking accessory
Product rangeTeSys
LA9FK4J4G — 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 LC1F500 2P or 3P or 4P Top CR1F500 3P or 4P

Product details

The LA9FK4J4G is a mechanical interlock from the TeSys F range, designed to physically prevent two or three contactors from closing simultaneously. It mounts in a 3-vertical configuration and interlocks bottom-position LC1F185 through LC1F225 (3P or 4P) or CR1F185 through CR1F225 (3P or 4P), middle-position LC1F400 or CR1F400 (2P, 3P, or 4P), and top-position LC1F500 or CR1F500 (2P, 3P, or 4P).

Lifecycle reality — this part is obsolete

Schneider has marked the LA9FK4J4G as obsolete. For an existing panel that needs this exact interlock, sourcing will run through surplus or broker channels.

Frequently asked questions

What contactors does the LA9FK4J4G interlock?

It interlocks bottom-position LC1F185 through LC1F225 or CR1F185 through CR1F225 (3P or 4P), middle-position LC1F400 or CR1F400 (2P, 3P, or 4P), and top-position LC1F500 or CR1F500 (2P, 3P, or 4P), all in a 3-vertical stack.

What is the TeSys range?

TeSys is Schneider Electric's family of motor control and protection components — contactors, overload relays, and accessories like this mechanical interlock.

MPN
LA9FK4J4G