Selector switch as a complete metal device from the Harmony XB4 series. ATEX approved for use in zones 21-22 (dust) and zone 1-2 (gas). Mounting dimension: 22.5 mm. Color: black, 2 NO contacts. IP protection class: IP66. 3 positions, momentary action, with a long lever. The modular Harmony series with a mounting dimension of 22 mm combines easy installation, efficiency, modern design, and flexibility with maximum robustness. Product standards according to EN/IEC 60947-5-1, EN/IEC 60947-5-4, CSA C22.2 No. 14, UL 508, EN/IEC 60947-1, JIS C 4520, certifications according to DNV, GL, UL listed, RINA, BV, CSA, LROS (Lloyds Register of Shipping).