Schneider Electric Q0220 NSNBC01 Circuit Breaker

Schneider Electric Square D Q0220 NSNBC01 is a 2-pole, 20‑amp circuit breaker designed to protect 120/240‑V circuits in compatible Square D panelboards. It provides thermal‑magnetic overcurrent protection with an interrupting rating up to 10,000 A at 120/240 VAC, making it suitable for residential feeders and branch circuits in light commercial settings. This plug‑on, stab‑lok style breaker installs into compatible panelboards that accept NC/Stab‑Lok type devices, allowing for straightforward field replacement. As a 2‑pole unit, it protects both conductors of a multiwire circuit and ensures simultaneous disconnection upon tripping. The NSNBC01 variant sits within Schneider Electric’s Square D family and is commonly used where a like‑for‑like replacement from the same family is desired for service continuity. Typical applications include protection of lighting circuits, receptacle circuits, kitchen small‑appliance branch circuits, and other general 120/240‑V loads in homes or light commercial installations. This model specifies a 20 A rating with standard thermal/magnetic trip characteristics, and should be paired with approved panel equipment and appropriate conductor sizes per local electrical code requirements.