The XB4BW31B5 is a complete illuminated push-button from the Harmony XB4 range, featuring a spring-return mechanism and a white flush operator. Constructed with a chromium-plated metal bezel and a Zamak fixing collar, it is designed for a standard 22.5mm mounting diameter. The unit includes one normally open (1NO) and one normally closed (1NC) slow-break contact block, along with an integral universal LED that operates on a 24V AC/DC supply. Connections are made via screw clamp terminals, and the device offers high mechanical durability of 10,000,000 cycles. With robust IP66, IP67, IP69, and IP69K ratings and a wide operating temperature range of -40 to 70°C, this push-button is highly suitable for demanding industrial applications.