what are main lug load centers used for
Main Breaker, 1 phase/22,000AIC. Load centers through 225 amp feature a factory bonded ground and neutral bar. For non-service entrance applications, an insulated neutral kit can be installed, or a separate main lug load center and MBK main breaker kit. Load centers have UL recognized short circuit ratings up to 100,000 amps when used with appropriate main or feeder overcurrent devices.