Schneider Electric (Square D) LADN31 Contact

The Schneider Electric (Square D) LADN31 is a high-performance instantaneous auxiliary contact block designed for seamless integration with the TeSys Deca, TeSys D, and TeSys F contactor ranges. This front-mounted contact block provides a versatile 3 N/O + 1 N/C pole composition, making it a standard choice for expanding control logic in motor starter applications and industrial automation circuits. Built for reliability in demanding environments, it features IP20 finger-safe terminals and high-durability screw clamp connections that accommodate flexible or solid conductors up to 2.5 mm².

Engineered to withstand heavy-duty industrial cycles, the Square D LADN31 is rated for an operational voltage up to 690V AC and holds a conventional free air thermal current (Ith) of 10A. It is commonly utilized for signaling and interlocking within LC1D contactors and CAD control relays. With its NC mirror contact certification and minimum switching capacity of 5 mA at 17 V, this auxiliary block ensures precise signal feedback, while the clip-on mounting system allows for rapid, tool-free installation directly on the front face of your primary switching device.

• Broad Compatibility: Snap-on design fits LC1D09 through LC1D150 contactors and CAD relays, simplifying inventory for multiple TeSys D frame sizes.
• Superior Contact Reliability: Features 3 Normally Open and 1 Normally Closed contacts with instantaneous operation and 30 million mechanical cycles of durability.
• Rugged Electrical Specs: Rated for 690V AC 25-400 Hz with a making capacity of 140A AC, meeting global standards including UL, CSA, IEC, and CCC.
• Safe Installation: Equipped with IP20 protected screw clamp terminals to prevent accidental contact and ensure secure wiring in high-vibration control panels.

• Does the LADN31 support side mounting? No, this specific model is a top-mount (front-mount) accessory. For side-mounting requirements, you should look for the LAD8N series.
• Are the terminals compatible with different wire types? Yes, the screw clamp terminals are designed for both flexible and solid cabling, with or without cable ends, ensuring a gas-tight connection.
• Can this be used for low-level electronic signals? Yes, with a minimum switching current of 5 mA, it is effective for providing feedback to PLCs and other low-current control logic.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.