The LA9FK4J4F 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 is compatible with a specific set of TeSys F contactors and reversing contactors: bottom-position LC1F115 through LC1F150 (3P or 4P) and CR1F150 (3P or 4P); middle-position LC1F400 (2P, 3P, or 4P) and CR1F400 (3P or 4P); top-position LC1F500 (2P, 3P, or 4P) and CR1F500 (3P or 4P). If you're maintaining a panel with any of those contactors in a vertical stack, this is the interlock that goes between them.
Schneider LA9FK4J4F TeSys Mechanical Interlock, Obsolete
MPNLA9FK4J4F
Obsolete
Schneider TeSys F, LA9FK4J4F, mechanical interlock for 3 vertical contactors, LC1F115-LC1F500 range.
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 LC1F115...LC1F150 3P or 4P Bottom CR1F150 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
Frequently asked questions
What contactors does this interlock work with?
It mechanically interlocks three vertical contactors: bottom position accepts LC1F115 through LC1F150 (3P or 4P) or CR1F150 (3P or 4P); middle position accepts LC1F400 (2P, 3P, or 4P) or CR1F400 (3P or 4P); top position accepts LC1F500 (2P, 3P, or 4P) or CR1F500 (3P or 4P).
How do I source this obsolete part?
Submit an RFQ with your quantity and target price. We will search independent and surplus inventory channels for new old stock or verified serviceable units. There is no standard lead time — it depends on what our network holds.
MPN
LA9FK4J4F