GE circuit breaker enclosures are UL listed, CSA certified and are suitable for use as service equipment (except as noted). The short circuit rating of the enclosure/circuit breaker combination is equal to the short circuit rating of the installed circuit breaker. Spectra RMS™ circuit breakers are suitable for use on AC systems only enclosure notes and/or limitation for 3-phase, 4-wire ground fault, order neutral kit and neutral current sensor kit (kits must be mounted in enclosure).