Industrial Panelboards | Heavy-Duty Electrical Distribution

Panelboards are typically wall-mounted, enclosed assemblies designed for branch circuit distribution in smaller spaces. Switchboards are larger, floor-standing assemblies designed for higher ampacity applications with more accessible components. Both are used for power distribution, but switchboards generally handle heavier loads and offer greater flexibility for large commercial and industrial installations.

NEMA 1 enclosures are designed for indoor use, protecting against contact with live parts and falling debris. NEMA 3R enclosures are rated for outdoor use, providing additional protection against rain, sleet, and ice formation. DEI Power offers both ratings across its full panelboard and switchgear product line, allowing you to select the appropriate enclosure for your installation environment.

UL 891 is the standard for deadfront switchboards, which includes panelboards and related low-voltage distribution equipment. A UL 891 listed assembly has been tested and verified to meet rigorous safety and performance standards. All DEI Power panelboards and switchgear are UL 891 certified, ensuring code compliance and reliable operation in commercial, industrial, and utility applications.

DEI Power offers panelboards, switchboards, switchgear, and service entrance equipment in amperages ranging from 400A to 4000A, including 400, 600, 800, 1000, 1200, 1600, 2000, 2500, 3000, and 4000 Amp configurations. Multiple voltage options are available including 120/240V, 208Y/120V, 240V, 480V/480Y/277V, and 415/240V to match your project specifications.

Most in-stock panelboards and switchgear ship within 1 business day with standard delivery in 3–5 business days. Free shipping is included on all orders shipped from DEI Power's 50,000 sq. ft. facility in Ontario, California. Built-to-order and custom configurations typically have 4–6 week lead times. Rush and emergency replacement orders are supported for active project deployments.

Yes. All DEI Power panelboards, switchboards, switchgear, and service entrance equipment meet UBC, CBC, and IBC requirements for all seismic zones. This compliance is critical for installations in California and other seismically active regions, ensuring the equipment maintains structural integrity and operational safety during seismic events as required by local building codes.