I've only used a one brand, Sq D and it was a QO style breaker with a unit on the side which required a neutral and a hot from a switch. In my case a panic button that shut a whole panel down. Pretty simple to install. I doubt you can make a regular breaker into a shunt trip. This breaker went bad, 100 amp 3 pole and it cost 300 bucks,used, [Linked Image], had to have it overnighted from California. It was the only thing my supplier could find at 4 pm in the afternoon and we needed it yesterday [Linked Image]