The TeSys LA9FK4K4G is a mechanical interlock accessory for the TeSys F contactor range. It provides physical interlocking between three contactors mounted vertically, preventing simultaneous closure of the interlocked devices. Compatible with bottom LC1F185 through LC1F225 3P or 4P contactors, as well as top and middle LC1F500 2P, 3P, or 4P contactors, and the corresponding CR1F reversing contactors. This part is now obsolete, so sourcing requires checking surplus or broker channels.
TeSys LA9FK4K4G Mechanical Interlock, Obsolete – Sourced to
MPNLA9FK4K4G
Obsolete
TeSys F, mechanical interlock, LA9FK4K4G, for 3 vertical contactors, interlock type mechanical.
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 LC1F500 2P or 3P or 4P Top CR1F500 3P or 4P Middle LC1F500 2P or 3P or 4P Middle CR1F500 3P or 4P |
Product details
Frequently asked questions
What contactors does the LA9FK4K4G interlock?
It interlocks bottom LC1F185 through LC1F225 3P or 4P, top and middle LC1F500 2P, 3P, or 4P, and the corresponding CR1F185 and CR1F500 reversing contactors, all mounted in a 3-vertical configuration.
How do I source an obsolete LA9FK4K4G?
Since it is obsolete and has no official replacement, sourcing goes through surplus or broker channels. Send an RFQ with your target quantity and delivery window — we will search our network for available units.
MPN
LA9FK4K4G