Schneider Electric XB4BA25 Push button, metal, flush, black, Ø22, spring return, unmarked, 1 NO + 1 NC. This Harmony XB4 modular push button operates with a spring return / impulse mechanism. It has a chromium-plated metal bezel and is supplied with a black flush cap, unmarked. It features 1 NO + 1 NC slow break contacts and screw-clamp terminals connection type. This push button provides an ergonomic interface for controlling your machines. It is easily installed into standard 22mm diameter panel cut-outs. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66 / IP67 / IP69 / IP69K, making it ideal for operation in harsh environments. It weighs 80g. Official Schneider characteristics include Range of product: Harmony XB4; Device short name: XB4; Product or component type: Push-button; Bezel material: Chromium plated metal; Fixing collar material: Zamak; Mounting diameter: 22.5 mm; Sale per indivisible quantity: 1; Shape of signaling unit head: Round. 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.