The CA4KN22BW3 is a 4-pole IEC type industrial Control Relay with DC coil, K-Line series. 2NO-2NC contact configuration. Built-in bidirectional peak limiting diode suppressor. Serrated silver-nickel contacts with wiping action provide excellent reliability in 12 or 24V control circuits. Mounted on 35mm DIN 3 track, but can also be mounted directly to a panel. Screw clamp terminal. Low consumption versions of this relay are available for use with low level DC signals from a computer or a PLC.