The LA9FJ4J4F is a mechanical interlock accessory from the TeSys F range, designed to physically prevent simultaneous closure of two contactors in a reversing or changeover circuit. It mounts in a 3-vertical configuration, meaning three contactors stacked vertically share a single interlock bar. The interlock is compatible with specific contactor and reversing contactor models: bottom position accepts LC1F115 through LC1F150 (3P or 4P) or CR1F150 (3P or 4P); top and middle positions accept LC1F400 (2P, 3P, or 4P) or CR1F400 (3P or 4P). This covers the F115–F150 frame on the bottom and the F400 frame above.
Schneider LA9FJ4J4F TeSys F Mechanical Interlock, for 3 Vert
MPNLA9FJ4J4F
Active
Schneider Electric TeSys F, LA9FJ4J4F, mechanical interlock for 3 vertical contactors, interlocking type Mechanical.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 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 LC1F115...LC1F150 3P or 4P Bottom CR1F150 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 contactors does this interlock work with?
It interlocks LC1F115–LC1F150 (3P or 4P) or CR1F150 (3P or 4P) on the bottom, and LC1F400 (2P, 3P, or 4P) or CR1F400 (3P or 4P) on the top and middle positions.
What is the mounting orientation?
The interlock is designed for 3-vertical mounting — three contactors stacked one above the other on the same DIN rail or panel.
MPN
LA9FJ4J4F