The 2CTB815101R8900 surge arrestor by ABB is designed for type 1+2 protection from electric surges. It features one pole, a 255VAC voltage rating, and DIN mounting. The operating temperature range for this device is -40 to 80°C. It has been certified for protection from overvoltage caused by lightning, power line switching, or other surge sources. This surge arrestor is used in several applications, including solar photovoltaic installations, industrial control systems, telecom and data centers, and renewable energy solutions.