Square D (Schneider Electric) CA2SKE20T7 TeSys IEC Control Relay. Schneider Electric Square D TeSys IEC Control Relay, Series: SK, 10 A, 400 Hz Frequency, 480 VAC Coil, 2NO Contact Form, 10 A at 690 VAC Contact, Surface Mounting, Screw Clamp Terminal, IP2X Enclosure, -20 to 50 deg C, 27 mm W x 55.5 mm D x 56 mm H Dimensions. Additional Description: SQD -CA2SKE20T7 ALTERNATING RELAY - 480-50/60. Catalog Description: TeSys SK control relay - 2 NO - <= 690 V - 480 V AC coil.