Schneider Electric XB4BA821 Manual overload reset push button, Harmony XB4, metal, flush, black, 22mm, 6...16mm actuation distance, unmarked. This Harmony XB4 black, complete push button for manual overload reset is part of the range diameter 22mm, Harmony XB4 metal. It has a circular head shape with a flush unmarked push. It features 10mm operating travel and 6mm to 16mm activating distance, and screw connection type. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66. Official Schneider characteristics include Range of product: Harmony XB4; Product or component type: Manual overload reset push-button; Device short name: XB4; Bezel material: Chromium plated metal; Fixing collar material: Zamak; Head type: Standard; Mounting diameter: 22.5 mm; Operator profile: Black flush, unmarked. Harmony XB4 devices use a chromium-plated metal bezel and are designed for robust panel operation where clear manual control, indication or machine safety interfaces are required.