M12 XL Connectors Phoenix Contact M12 XL Panel Mount Receptacles are designed for easy installation. The connectors have a 19mm hex flange, thicker than the standard 17-mm flange. The new design holds the sealing O-ring in a groove at the base of the receptacle threads. This feature protects it against damage during installation and ensures IP protection. The standard M12 device connector type has been extended to include a new, larger screw-in housing. Mounting is made easier thanks to wider wrench flats and the simplified mounting contour in the device front plate. The Phoenix Contact M12 XL housing design has also been introduced for the M12 power device connectors with S- and T-coding.