Schneider Electric XB5AA51 Harmony XB5 plastic flush yellow 22.5mm spring return unmarked 1NO push button. The Schneider Electric XB5AA51 is a robust Harmony XB5 series plastic push button designed for industrial control applications. This complete product features a 22.5 mm mounting diameter and a dark grey plastic bezel, housing a distinctive yellow flush, unmarked operator. It incorporates a spring return mechanism and a 1 NO (normally open) slow-break contact, suitable for various control circuits. Key specifications include a rated insulation voltage of 600 V and an AC-15 rated operational current of 3 A at 240 V, ensuring compatibility with common industrial power systems in Egypt and the Gulf. Built for demanding environments, the XB5AA51 offers an impressive mechanical durability of 10 million cycles and an electrical durability of 1 million cycles at AC-15, 230 V, 2 A. Its robust environmental protection includes IP66, IP67, IP69, and IP69K ratings, NEMA UL type 4X/13, and IK03 shock resistance. Featuring secure screw clamp terminals and an operating temperature range of -40 to 70 °C, this Schneider Electric push button is an essential component for control panels across diverse industrial sectors in Egypt and the Gulf, such as cement, oil and gas, water treatment, food and beverage, and building services.