The OVR T1-T2 12.5-275S C QS with MAINS SURGE PROTECTOR, 275VAC, DIN RAIL manufactured by ABB is a type of overvoltage protection device designed to protect electrical equipment and components from electrical surges, spikes, or other high voltage occurrences. It features a 275VAC voltage rating and a quick-snap design for easy mounting on standard 35mm DIN rail systems. The device is designed to disconnect the load circuit quickly and safely in case of an overvoltage event, ensuring reliable and long-term protection for sensitive electrical components and equipment. The device is typically used in automation systems, data centers, building installations, home appliances, and more.