Siemens Industry, Inc. P1E54VE400CTST Panelboard Interior

The Siemens P1 Panelboard Interior P1E54VE400CTST is a 54-space interior rated for 480Y/277V, three‑phase, four‑wire systems with a 400 A maximum main rating. Built to the P1 panelboard family, it accepts Siemens BQD branch devices and features a copper bus assembly inside a steel enclosure that is rated for NEMA 1/3R/12 installations. This interior provides 54 circuit positions for organizing feeders and branch circuits, making it suitable for mid‑to‑large commercial or light industrial distribution running at 480 VAC. The copper bus and robust internal hardware deliver reliable current transfer and durable operation in demanding environments, while the layout supports straightforward expansion within the 400 A limit as your load grows. When paired with compatible main devices and accessories from the Siemens P1 ecosystem, this interior helps create a scalable, code‑compliant distribution point for services and subpanels in commercial buildings. Typical applications include office complexes, retail spaces, data centers, and industrial facilities with 480V feeders, and its interior‑only configuration makes it easy to integrate into existing Siemens enclosures.