Schneider Electric Telemecanique CA3DN31BD Control Relay

Schneider Electric's Telemecanique CA3DN31BD is a 24 V DC coil control relay designed for reliable auxiliary switching in industrial control circuits. It provides a 3 normally open and 1 normally closed contact configuration (4 poles) for PLC interfacing, machine sequencing, interlocking, and signaling across control panels, motor control centers, packaging machinery, conveyors, and process equipment. Key specs include a 10 A conventional thermal current (Ith), a contact voltage rating up to 600 V AC, and a rated operational voltage (Ue) up to 690 V AC, with utilization categories AC-15 and DC-13. The device uses screw clamp terminals and supports 35 mm DIN rail or panel mounting for flexible installation in industrial control panels, machinery, and factory automation equipment. Part of the CA3 Series, the CA3DN31BD is commonly used in equipment replacements, machine retrofits, control panel modernization, and new automation installations. Related replacements include CAD32BD and CAD32FD TeSys D control relays.