Schneider Electric's TeSys K CA3KN22BD is a compact control relay offering two normally open and two normally closed contacts (2 NO + 2 NC) in a single unit, designed for logic and interlock tasks in machine control. It uses a 24 VDC coil for energization and is part of Schneider Electric's TeSys K auxiliary contact relay family. The device is rated to switch circuits up to 690 VAC, enabling its use as an interface between low‑voltage control logic and higher‑voltage mains within control panels. Typical applications include safety interlocks, sequencing, signaling, and remote control of auxiliary loads in automation equipment.
