What this part does and where it fits
The LA9LB330 is a door interlock mechanism for Schneider's Integral 18 range of manual motor starters and enclosed disconnects (LD1, LD3, LD5 enclosures). It prevents the enclosure door from opening when the switch is in the ON position, enforcing a basic safety interlock on the panel. Rated IP54, the mechanism is suited for industrial environments where dust and splash ingress are a concern — typical for floor-mounted motor control centres or standalone starter boxes.
Sourcing reality — obsolete, quoted to order
Schneider has classified the LA9LB330 as obsolete. Available through independent surplus and broker channels. Quantities are lot-specific; availability and pricing are confirmed at RFQ against your BOM line.
Visual identification on the shelf
The housing is red, which matches the standard Schneider door-interlock colour across the Integral series — helps with quick visual identification during panel build or maintenance.