This is a Trip unit accessory for PowerPact P-, R-Frame circuit breakers. This has a two programmable contacts module (M2C). This trip module can be installed in unit mount, I-Line, motor oeprated and drawout P-Frame circuit breakers. It can be used with Unit mount and I-Line R-Frame circuit breakers. This accessory is field iinstallable. This product complies with UL Listed and CSA standards,