Eaton NSB-FAZ-K40-2P Miniature Circuit Breaker is a two-pole protective device in the FAZ family, rated for 40 A and designed for 120/240 V AC power networks operating at 50 or 60 Hz. The 2P configuration ensures simultaneous disconnection of both hot conductors for enhanced protection of multi‑wire branch circuits within Eaton NSB panelboards. This MCB protects electrical circuits from overcurrent and short circuits, helping to safeguard wiring and connected equipment in residential or light commercial distribution applications that specify FAZ-type breakers and NSB panels. Catalog designation NSB-FAZ-K40-2P reflects its 40 A rating and 2-pole form factor.
