Eaton NSB FAZ-D5 2-NA Miniature Circuit Breaker

The Eaton NSB FAZ-D5 2-NA miniature circuit breaker provides two-pole overcurrent protection for 277 V AC circuits in 50/60 Hz electrical systems. The FAZ-D5 designation identifies a FAZ 2P, 5 A device designed to disconnect two conductors simultaneously within a single breaker. As part of Eaton's NSB family, this MCB is meant for installation in distribution panels to interrupt fault currents and protect wiring and connected equipment. The unit is rated for 277 V operation at 50/60 Hz, with a 5 A current rating that sets the threshold for tripping to prevent insulation damage and overheating. The 2-pole design ensures coordinated disconnection of both poles when a fault arises, supporting safe operation in multi-wire branch circuits in typical electrical installations.