Schneider Electric LADN40 TeSys Deca Auxiliary Contact Block, 4 NO, Front Mounting, Screw Clamp Terminals. The Schneider Electric LADN40 is an essential auxiliary contact block from the TeSys Deca range, designed to seamlessly expand the control capabilities of your TeSys D and TeSys F contactors. This robust front-mounting block provides four normally open (4 NO) instantaneous contacts, ensuring reliable signal transmission and interlocking within complex electrical systems. Its user-friendly screw clamp terminals accommodate a variety of cable sizes, simplifying installation and maintenance. Engineered for demanding industrial environments, the LADN40 boasts a high rated operational voltage of 690 V AC and a substantial mechanical durability of 30 Mcycles. With an IP2X protection rating and an operating temperature range of -5 to 60 °C, it offers dependable performance across diverse conditions. Ideal for applications in Egypt and the Gulf, including oil and gas, water treatment, cement, food and beverage, and building services, the Schneider Electric LADN40 enhances operational safety and efficiency in motor control and process automation.