Eaton NSB FAZ-D3 1-SP miniature circuit breaker is a single-pole protective device rated 3 A at 277 V AC, designed for systems operating at 50/60 Hz. As part of the FAZ-D3 family, this 1P, 3A MCB provides overcurrent protection for a single circuit, interrupting fault currents to help safeguard wiring and connected equipment. The model's 1P 3A 277V specification defines its role in protecting a branch circuit within 50/60 Hz electrical installations.
