Schneider Electric LADN20 TeSys Deca Auxiliary Contact Block 2NO Front Mounting Screw Clamp Terminals. The Schneider Electric LADN20 is an essential auxiliary contact block from the renowned TeSys Deca range, designed to enhance the functionality of your TeSys D and TeSys F contactors. This reliable front-mounting unit features two normally open (2 NO) instantaneous contacts, crucial for control circuits, signaling, and interlocking applications. Equipped with robust screw clamp terminals, it ensures secure and straightforward wiring. The LADN20 is built to operate reliably across a broad range of industrial environments, offering a rated operational voltage of up to 690 V AC and a rated insulation voltage conforming to IEC 60947-5-1 standards. Its impressive mechanical durability of 30 million cycles and an IP20 degree of protection underscore its robust construction. Ideal for demanding sectors in Egypt and the Gulf, such as cement production, oil and gas extraction, water treatment facilities, food and beverage processing, textile manufacturing, and critical building services, the Schneider Electric LADN20 guarantees consistent performance in diverse operational settings.