Schneider Electric LA4DMK TeSys D Contactor Module

The Schneider Electric LA4DMK TeSys D Contactor Module is a compact control accessory that provides automatic, manual, and stop (HOA) control of TeSys D contactors for local override and testing in industrial motor control systems. It is commonly installed in motor control centers, conveyors, pumps, compressors, HVAC systems, and other industrial control panels to enable local Auto/Manual/Stop operation and reliable contactor override for maintenance, repair, retrofit, or automation tasks. The module is manufactured by Telemecanique (Schneider Electric) and belongs to the TeSys D family as the LA4DMK Automatic-Manual-Stop Contactor Control Module, with an operational voltage range of 24–100 VAC and a two-position Auto-Man switch featuring an O-I (On-Off) control interface. Mounting options include direct mounting on terminals A1 and A2 (LC1D40–D150) or via the LAD4BB adapter (LC1D09–D32), and it is compatible with TeSys D LC1D09–D150 contactors and CAD series control relays. Weight is approximately 0.04 kg (0.09 lb). This module supports local manual operation alongside remote automatic control in industrial motor control setups, making it suitable for MCCs, production lines, material handling equipment, robotics, and other electrical control panels where dependable manual override and process monitoring are essential.