Phoenix Contact 5452509 PCB headers have a nominal cross-sectional area of 2.5 mm², with a black color and a rated current of 12 A at a voltage rating of 320 V. They feature a Sn contact surface, use pin connectors, and have 19 positions for connections, arranged in a linear pinning layout with 1 solder pin per potential. The headers are mounted using wave soldering, utilize the BASICLINE 2.5 plug-in system, and are secured by screw locking mechanisms with threaded flanges, packaged in cardboard.