Harmony® XAC Medium-Duty Pendant Control Stations Schneider Electric Harmony® XAC Medium-Duty Pendant Control Stations are for custom 22mm pushbuttons with pre-assembled and un-assembled versions. The Harmony® XAC components offer hole size options from 2 to 12 holes in four pendant type groups: XACA, XACB, XACD, and XACM. Available functions are 1 or 2 speed up, down, right, and left movements. An emergy stop option and two material types (polyester and polypropylene) are also available. The polypropylene components provide NEMA 4 and 4X protection. XAC Pendant devices use ZA2 22mm pushbuttons in assembly mounting to an internal metal plate. The double-insulated Harmony® XAC Medium-Duty Pendant Control Stations feature IEC standards compliance and are UL/CSA certified.