Schneider Electric XCS-L749F3 Interlock Switch

The Schneider Electric XCSL749F3 interlock switch is a rugged, metal‑enclosed safety interlock from the Telemecanique XCSL family that uses a key‑operated actuator with locking and a manual key release to monitor and secure machine guard doors, access panels, and protective enclosures in industrial automation. It features 2 NC + 1 NO contacts with slow‑break operation and break‑before‑make sequencing, designed to integrate with safety relays and safety controllers. This safety interlock switch is commonly used in guard‑locking applications and for monitored access. Rated up to 300 V AC (AC‑15: 240 V AC; DC‑13: 250 V DC) and a 10 A maximum load (AC‑15: 3 A at 240 V AC; DC‑13: 0.27 A at 250 V DC), it uses screw clamp terminals and three 1/2 in. NPT cable entries for reliable wiring. The metal enclosure carries an IP67 protection rating for dust and water ingress in harsh industrial environments. Common applications include machine guard doors, safety gates, robotic cells, packaging equipment, conveyors, and other automated production machinery requiring guarded access and monitored interlocks. Part number XCSL749F3 is manufactured by Telemecanique Sensors / Schneider Electric, with common replacements XCSLF3737333, XCSL761B3, and XCSL766B3 for retrofit or expansion needs.