The Schneider LADN13G is a front-mounted auxiliary contact block in the TeSys Deca range, adding one normally-open and three normally-closed instantaneous contacts to a contactor or starter base. It's the block you reach for when a control circuit needs more NC feedback than the base contactor provides — three NC poles on a single add-on, which is an unusual density for this form factor. Rated at 10 A conventional free air thermal current (Ith) at 60 °C, it handles 6 A at 120 V AC-15 (typical for solenoid and contactor coils) and 0.55 A at 125 V DC-13. Torque to 1.7 N·m with a 6 mm flat or No. 2 Phillips/Pozidriv.
Where it fits on the line
Front-mounts directly onto the contactor or reversing starter in the TeSys Deca family. The 44 mm width and 48 mm height match the base device profile, so the block doesn't overhang the DIN-rail footprint. Depth of 42 mm includes the terminal screws — account for that in panel layout if the contactor is near the backplane or a swing-panel hinge. The 3000 m operating altitude limit covers most installations except high-mountain or unpressurised airborne gear.
The 10 A GG fuse protection rating means the block is coordinated with a 10 A gG (general-purpose) fuse upstream — don't oversize the branch protection without checking the let-through on a fault. The 140 A AC making capacity (IEC 60947-5-1) and 250 A DC making capacity tell you the contacts can close onto a faulted circuit without welding, but the fuse clears it.