The LA9FJ4J4G is a mechanical interlock from the TeSys F range, designed to prevent simultaneous closure of two contactors in a reversing or changeover circuit. It physically blocks the armature of one contactor when the other is engaged. It mounts in a 3-vertical configuration and interlocks specific contactor models: bottom position accepts LC1F185 through LC1F225 (3P or 4P) or CR1F185 (3P or 4P); top and middle positions accept LC1F400 (2P, 3P, or 4P) or CR1F400 (3P or 4P).
TeSys LA9FJ4J4G Mechanical Interlock, Obsolete – Sourced to
MPNLA9FJ4J4G
Obsolete
Schneider Electric TeSys F LA9FJ4J4G mechanical interlock, for 3 vertical contactors, obsolete.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Product / component type | Mechanical interlock |
| Accessory category | Interlocking accessory |
| Product range | TeSys |
| Parameter | Value |
|---|---|
| Device short name | LA9F |
| Interlocking type | Mechanical |
| Mounting position | 3 vertical |
| Interlocked device | Bottom LC1F185...LC1F225 3P or 4P Bottom CR1F185 3P or 4P Top LC1F400 2P or 3P or 4P Top CR1F400 3P or 4P Middle LC1F400 2P or 3P or 4P Middle CR1F400 3P or 4P |
Product details
Frequently asked questions
What is the closest alternative to LA9FJ4J4G?
No official successor is listed. For a direct mechanical interlock replacement in the TeSys F range, verify fit with a current TeSys F interlock accessory — the mounting pattern and contactor compatibility may differ. We can help cross-reference against an RFQ.
What contactors does the LA9FJ4J4G interlock?
It interlocks LC1F185 through LC1F225 (3P or 4P) and CR1F185 (3P or 4P) in the bottom position, and LC1F400 (2P, 3P, or 4P) or CR1F400 (3P or 4P) in the top and middle positions, in a 3-vertical stack.
MPN
LA9FJ4J4G