Schneider Electric ZB4BK1543 Illuminated selector switch head, metal, red, Ø22, integral LED, 3 positions, spring return to center. This Harmony XB4, illuminated red selector switch head for integral LED with standard handle has 3 positions, operates with spring return to center mechanism. This illuminated switch head for integral LED provides an ergonomic interface for controlling your machines. It is supplied with standard handle and can easily be installed on compatible selector switch units. It provides a clear help in setting your machines in various operating modes, even in darker control rooms, and with a clear visual feedback. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP69K. It has a metal bezel, this makes it Ideal for applications requiring high impact and vibration resistance. It is designed to fit in a standard 22mm cutout, ensuring compatibility when installing in pre-existing machinery. Its wide range of operating temperatures from -40°C to 70°C allows versatility in usage of product. Official Schneider characteristics include Range of product: Harmony XB4; Product or component type: Head for illuminated selector switch; Product compatibility: Universal LED; Device short name: ZB4; Bezel material: Chromium plated metal; Head type: Standard; Mounting diameter: 22.5 mm; Sale per indivisible quantity: 1. 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.