Schneider Electric Telemecanique CA3DN40DB Control Relay

Schneider Electric Telemecanique CA3DN40DB Control Relay is a 24 V DC coil auxiliary switching relay for industrial control circuits. It provides four normally open contacts across four poles (4 NO, 4-pole) with a conventional thermal current Ith of 10 A and a rated making capacity Irms of 110 A (IEC 60947). It is rated for Ue up to 690 V AC at 400 Hz, Ui 690 V (IEC), 750 V (VDE), and 600 V (CSA), with utilization categories AC-15 and DC-13. The device uses screw clamp terminals and can be mounted on a 35 mm DIN rail or on a panel. It is commonly installed in motor control centers, control panels, packaging machinery, conveyors, and process equipment that require auxiliary contact switching. Applications include auxiliary switching, PLC interfacing, machine sequencing, interlocking, and signaling in industrial automation systems. Manufacturer: Telemecanique / Schneider Electric; model CA3DN40DB; 4-pole, 4 NO, 24 V DC coil. Common replacements include CA3KN40BD TeSys K and CAD40BD / CAD50BD TeSys D.