Schneider Electric LA8-DN11 Auxiliary Contact Block

The Schneider Electric LA8-DN11 auxiliary contact block adds one normally open (NO) and one normally closed (NC) auxiliary contact to TeSys D contactors, expanding control signaling and interlocking options in motor-control circuits. This side-mount block is compatible with TeSys D LC1D and CAD contactors and is commonly installed in MCCs, conveyors, pumps, compressors, and industrial control panels. Electrical specifications include a rated operating voltage (Ue) of 690 VAC, 25–400 Hz, and a rated insulation voltage (Ui) of 690 VAC (IEC) or 600 VAC (UL/CSA); conventional thermal current Ith is 10 A at 60°C. The unit uses screw-clamp terminals and mounts on the side for easy integration with TeSys D assemblies, with durability rated up to 30 million mechanical cycles. Standards and certifications include IEC 60947-5-1, UL 60947-5-1, CSA C22.2 No. 60947-5-1, and certifications CB, UL, CSA, CCC, EAC, UKCA. Applications span industrial motor control, automation systems, and electrical control panels where auxiliary contacts support control signaling, process monitoring, and electrical interlocking. Common replacements include Schneider Electric LAD8N11 (side-mount), Siemens SIRIUS 3RH2911 (1NO+1NC), and Allen-Bradley 100-S (1NO+1NC).