Schneider Electric LADN40 Auxiliary Contact Block

Schneider Electric LADN40 is a TeSys D auxiliary contact block that provides four normally open (4NO) contacts to a compatible TeSys D contactor. Designed for front-mount installation with screw-clamp terminals, it is rated for 10 A per contact and supports voltages up to 690 V AC, enabling reliable auxiliary signaling, interlocking, and PLC input circuits without consuming main contacts. The four NO outputs are isolated from the main coil circuit, offering clean signaling paths for status feedback or control logic. This block is intended for use with TeSys D family contactors and is compact enough to mount on the front face of the assembly, helping conserve panel space while expanding available auxiliary contacts. Wiring is straightforward via standard screw terminals, and the LADN40 is catalogued across Schneider Electric's TeSys auxiliary accessory lineup, making it a common upgrade for installations requiring additional NO contacts in general-purpose AC control circuits.