A Siemens P1 panel is an industrial-grade professional lighting and power panelboard engineered primarily for commercial, institutional, and heavy-duty industrial applications. Unlike standard residential load centers, P1 panels support high-capacity main buses ranging from 250A to 400A, accommodate up to 54 or more circuits, feature field-convertible main lug or main breaker kits, and are built to handle complex multi-phase electrical distribution systems with exceptional fault current ratings up to 200 KAIC.
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