Schneider Electric’s 9001KR4B is a Harmony 9001K push-button head featuring a black mushroom actuator with a 30 mm diameter and spring-return action for momentary control. The head has a metal body with a snap-in plastic mushroom insert and is designed for 1-3/8 in (35 mm) panel cutouts, compatible with KA contact blocks to complete the circuit. This two-position mushroom push-button head is used in industrial control panels to start or stop equipment and to provide control signals in machinery applications. For matching accessories and contact blocks, refer to Schneider Electric’s KA family documentation.
