Schneider Electric LADN04 TeSys Deca 4NC Front Mount Auxiliary Contact Block

The Schneider Electric LADN04 is a TeSys Deca series front-mounting auxiliary contact block designed to expand the switching capability of TeSys D and TeSys Deca contactors in industrial control and automation applications. Featuring a 4NC (4 normally closed) contact configuration, the LADN04 mounts directly to the front face of compatible contactors, enabling reliable signal and control circuit switching in control panels and motor starter assemblies.

Technical Specifications

Applications & Use Cases

• Motor Control Centers: Extend auxiliary switching contacts on TeSys D/Deca contactors for motor starter interlocking and status signalling.
• Control Panel Wiring: Provide additional normally closed contacts for PLC input signals, indicator lamps, and safety interlocks.
• Industrial Automation: Support automation sequences requiring feedback or permissive signals from contactor state in conveyors, pumps, and HVAC systems.
• OEM Machine Building: Pre-assembled front-mount design speeds up panel assembly and reduces wiring time in high-volume machine production.