The Square D EDB34040 Circuit Breaker is a 3-pole, 40A bolt-on device designed for use in a 480Y/277V AC system. It features a yellow and blue color scheme and is made of plastic material. This Type B circuit breaker has an on/off operation method and a tripping characteristic suitable for a branch circuit application. With its bolt-on mounting style and switch control style, the Square D EDB34040 Circuit Breaker is a reliable and efficient component for electrical systems in industrial settings.