Square D (Schneider Electric) CA2KN22F7 TeSys Control Relay. Schneider Electric Square D TeSys Control Relay, Series: K Series, 10 A, 400 Hz Frequency, 110 VAC Coil, 2NO-2NC Contact Form, 10 A at 690 VAC Contact, Surface Mounting, Screw Clamp Terminal, IP2X Enclosure, -25 to 50 deg C, 1.77 in W x 2.24 in D x 2.28 in H Dimensions. Additional Description: SQD -CA2KN22F7 CONTROL RELAY 600VAC 10AMP IEC +OPTIONS. Catalog Description: TeSys K control relay , 2 NO + 2 NC , <= 690 V , 110 V AC coil.