The Schneider Electric TeSys Deca LADN13A is an auxiliary contact block — 1 normally open and 3 normally closed instantaneous contacts, front-mounted onto a TeSys Deca contactor or reversing starter. It's the part that tells the PLC or safety circuit whether the main contacts have picked up or dropped out, or that interposes a signal before the power circuit closes. That 10 A figure is the continuous carry limit through the block itself — the actual switching current depends on the load category: 6 A at 120 V AC-15 (typical for solenoid or contactor coils), 1.04 A at 690 V AC-15, and 0.55 A at 125 V DC-13. Minimum switching capability is 5 mA at 17 V — useful to know if you're running dry-contact signals into a low-power PLC input card that won't wet the contacts enough to burn through oxide film.
Front-mounting onto the contactor body — clips on without tools, no DIN rail required for the block itself. Dimensions are 44 mm wide, 42 mm deep, 48 mm tall, which is the standard TeSys Deca footprint. The snap-in terminals accept 1 to 4 mm² flexible or rigid wire (with or without ferrules), and the block carries an IP20 finger-safe rating per IEC 60529.
Standards compliance covers EN/IEC 60947-5-1, UL 60947-5-1, CSA C22.2 No 60947-5-1, and GB/T 14048.5 — so it's accepted in North American, European, and Chinese panels without a separate approval hunt.