Rep might mean receptacle. If so, it should have been abbreviated "recp." In other words, the circuit breaker protect a conductor circuit for receptacles and the converter as Gary has mentioned.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7