GE's 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). ACCESSORIES Neutral Kit (non-GF applications) TNIA4 00 Neu tr al Kit(s) (for GF appli cation s) TNIA400VG Neutral Current Sensor(s) (for GF applications) TSRG201, TSRG204 400S Amps 400 A