Schneider Electric Harmony XB5AP21 is a 22 mm plastic pushbutton with a projecting black head, spring-return action, and a booted, unmarked design for panel-mount control in industrial equipment. It provides a single normally open (NO) contact and is offered as a complete unit compatible with screw-clamp terminal connections for reliable wiring. The head is booted with a clear silicone boot, and the unit weighs approximately 0.039 kg, reflecting its compact, robust construction within the Harmony XB5 family.
