Schneider Electric NQOD 3125Q2MB Main Breaker

The Schneider Electric NQOD 3125Q2MB is a 125‑amp main breaker kit for Square D NQOD panelboards, enabling a primary disconnect within compatible interiors to protect the entire panel and its branch circuits. Designed for NQOD interiors, this kit supports both plug‑on and bolt‑on main‑breaker configurations, offering flexible installation options whether you are upgrading an existing NQOD panel or installing a new service disconnect. When used as service equipment, NQOD panel interiors are commonly configured for 30‑ or 42‑circuit layouts, providing a centralized overcurrent protection point for lighting and general loads in commercial or light‑industrial applications. The 3125Q2MB works within Schneider Electric's Square D ecosystem, ensuring consistent compatibility with adjacent accessories, lugs, and mounting hardware used in NQOD installations. By delivering a dedicated main‑breaker solution, it helps meet electrical‑code requirements for a visible disconnect and simplifies future maintenance or replacement of the interior without changing the panel enclosure. The NQOD family is designed for reliability in demanding environments, with a focus on straightforward field installation and long‑term service compatibility across generations of Square D equipment.