Front element for selector switch Harmony ZB4. Front black, cover chrome-plated metal. 2 positions 90°. Dimensions (WxHxD) 29x29x45 mm, mounting diameter 22 mm, weight 0.026 kg. Mechanical life 500,000 cycles. Head shape round, standard. With high vibration resistance and chemical resistance, ambient temperature -40 to +70 degrees C. The modular metal program with 22mm installation dimension combines easy installation, efficiency and modern design. Certifications according to CSA, UL listed, BV, GL, RINA, LROS (Lloyds register of shipping), DNV. Product standards according to UL 508, EN/IEC 60947-5-4, CSA C22.2 No 14, JIS C 4520, EN/IEC 60947-1, EN/IEC 60947-5-5, EN/IEC 60947-5-1.