Schneider Electric XB5AG21 Harmony XB5 Key Switch Selector, 2-Position, 1 NO. The Schneider Electric XB5AG21 Harmony XB5 Key Switch Selector offers robust and reliable control for a variety of industrial applications. Featuring a dark grey plastic bezel and a standard 22.5 mm mounting diameter, this durable key switch is designed for easy integration into control panels. It functions as a 2-position, 90° stay-put operator, utilizing a common Key 455 lock type, with key withdrawal possible only in the left-hand position. Equipped with 1 NO (Normally Open) slow-break contact, it ensures precise switching. The XB5AG21 boasts a conventional free air thermal current of 10 A and a rated insulation voltage of 600 V, making it suitable for demanding environments. Its impressive IP69, IP69K, IP66, and IP67 ratings, alongside NEMA UL Type 4X/13 and IK04 protection, guarantee excellent resistance to dust, water, and impact. With an operating temperature range of -40 to 70 °C and mechanical durability of 1,000,000 cycles, it is built to last. Ideal for critical control circuits in industries such as oil and gas, water treatment, cement, food and beverage, and building services across Egypt and the Gulf, the Schneider Electric XB5AG21 is a high-performance choice.