UL 489 Listed Circuit Breakers
This is best choice for overcurrent protection of North American countries.
These breakers comply with American UL standard and Canadian CSA standard, and are listed by UL. These breakers are suitable for a feeder or a branch circuit protection.
UL 489 Listed Molded Case Circuit Breakers NF-U
This kind of breaker comply with UL 489 and CSA C22.1No.5.
UL 489 Listed Molded Case Circuit Breakers with Ground Fault Protection NV-U
This kind of breaker comply with UL 1053 and CSA C22.1No.144.