Siemens P1-250A-208Y-120V-3P-4W Panelboard Main

Siemens P1-250A-208Y-120V-3P-4W Panelboard Main is a 250 amp main panel from the Siemens P1 family, configured for 208Y/120 VAC, three‑phase, four‑wire service. It reflects the Revised P1 design approach, offering factory‑assembled main configurations within a modular panel platform and space for branch circuits using Siemens’ enclosure and bus system. The P1 lineup supports amperages from 100 to 400 A, and the 208Y/120 V 3P4W variant is engineered for commercial installations that pair 120 V branch circuits with 208 V equipment in the same distribution panel. This configuration makes it suitable as a service entrance or primary distribution panel in offices, retail spaces, and light industrial facilities, providing a reliable, scalable solution for organizing circuits while maintaining compatibility with Siemens breakers and field‑configured layouts. The 208Y/120 V 3P4W arrangement helps ensure safe neutral distribution and compatibility with standard 120 V loads, while giving options for future expansion as electrical loads grow.