Schneider Electric LA1KN40 Electrical Contact Block

LA1KN40 is Schneider Electric’s TeSys K auxiliary contact block that adds four normally open contacts to a TeSys K control relay. This 4 NO add‑on block is designed for front mounting on compatible TeSys K assemblies and uses screw clamp terminals for secure field wiring. It functions as an expansion module for signaling and control circuits, letting a single relay deliver additional dry-contact outputs for PLC inputs, interlocking, sequencing, or status indication without introducing a separate relay. The block is intended to clip onto the TeSys K relay, maintaining a compact footprint and straightforward wiring through its screw terminals. With four independent normally open contacts, it provides versatility in complex control schemes, while preserving the main relay’s electrical ratings and mechanical fit. The LA1KN40 is cataloged within Schneider Electric’s TeSys K accessories and is part of the add-on family that simplifies panel layouts by stacking auxiliary contacts directly onto the control relay assembly. Typical applications include machine automation, process control, conveyor systems, and general industrial equipment where additional contact feedback or interlock signaling is required, all inside a single TeSys K enclosure and mounting footprint.