Plastic push button as a front element with a mounting dimension of 30 mm, series Harmony XB5F for flat installation. The actuation function features a latching mechanism. With the Harmony online configurator, customizations such as labeling, printing, and coloring are possible. The modular series Harmony XB4F and XB5F with 30 mm mounting dimensions combines easy installation, efficiency, modern design, and flexibility with maximum robustness. It has IP protection ratings up to IP69K and can operate in ambient temperatures from -40 °C to +70 °C. The product standards include EN/IEC 60947-5-1, EN/IEC 60947-5-4, CSA C22.2 No. 14, UL 508, EN/IEC 60947-1, and JIS C 4520, with certifications from DNV, GL, UL listed, RINA, BV, CSA, and LROS.