The Telemecanique LA1-D22 is an auxiliary contact block — the add-on switching element that snaps onto the front of a contactor or starter to provide status feedback, interlock signals, or control-circuit extension. Classed under Contactors and Starters / Auxiliary Contacts, it is the piece a panel builder reaches for when the main contactor's built-in aux is already used up or the circuit needs a normally-open or normally-closed pair the base unit does not carry.
For a procurement freeze or a long-running panel design, this is the low-risk pick: the part number is stable, the manufacturer has not flagged a PCN, and the auxiliary contact family it belongs to has been a staple across Telemecanique contactor ranges for years. A buyer can specify it into a BOM line and expect the same form, fit, and function on repeat orders.
Deployment Context
Snaps onto the contactor face — no tools, no additional wiring duct. The auxiliary contacts switch the control-circuit voltage (typically 24 VDC or 120 VAC) to signal the PLC input, energize a pilot light, or interlock a downstream starter. In a panel with multiple contactors ganged for motor control, the LA1-D22 is what carries the feedback loop back to the safety circuit or the HMI.