Schneider Electric NQ3640S Panelboard Interior 84 Space

Schneider Electric's Square D NQ3640S Panelboard Interior is an 84-space NQ-series interior designed for 3‑phase, 4‑wire distribution at 240 V. The 84‑pole layout supports a 225 A main-lug configuration and uses aluminum bus, enabling durable, scalable power distribution for mid‑size commercial and light‑industrial applications. As part of the NQ family, this interior is intended to be mounted inside compatible Schneider Electric enclosures and accepts the NQ‑series breakers designed for 84‑space interiors. With 84 positions, it supports substantial branch-circuit capacity while preserving a compact footprint suitable for modular panel installations. The interior supports 3‑phase, 4‑wire service and is commonly used in service entrances and distribution panels where a consistent, standardized layout helps streamline installation, labeling, and maintenance. It offers the reliable performance expected from Schneider Electric’s Square D line, combining rugged aluminum bus with a durable enclosure design to handle routine distribution tasks in commercial environments.