Schneider Electric LADN04 TeSys Auxiliary Contact Block 0NO+4NC

The Schneider Electric LADN04 is a front-mount auxiliary contact block designed to extend the control and signalling functionality of TeSys contactors and motor starters in industrial and automation installations. This block features four normally closed (4NC) instantaneous contacts, providing multiple feedback and interlock points for safety and logic control circuits. It attaches easily to compatible TeSys contactor bases and connects via secure screw-clamp terminals for dependable electrical performance. Built to meet relevant IEC and international standards for auxiliary contacts, the LADN04 is suitable for applications that require multiple fail-safe or sequential logic conditions, machine control feedback, and status monitoring in control cabinets and automated systems. Its compact design and robust construction make it a practical choice for panel builders, system integrators, and electrical technicians.