3000 Amp Main Distribution Panels — 480V

To size a main distribution panel, calculate the total connected load in amperes, apply a demand factor per NEC guidelines, and add a safety margin — typically 20–25%. For 480V three-phase systems, divide total kVA by 1.732 × 480. DEI Power offers specialist consultation to help engineers and contractors select the correct amperage, from 400A up to 4000A, based on your specific load profile and utility requirements.

All DEI Power main distribution panels are UL Listed, UL 891 Certified, and EUSERC Approved. They also meet UBC, CBC, and IBC requirements for all seismic zones, making them suitable for use across the continental United States, including high-seismic regions. DEI Power holds Siemens Approved OEM status and manufactures with genuine Siemens components for guaranteed compliance.

DEI Power offers six product types at 3000A 480V: Meter Mains, Panelboards, Switchboards, Switchgear, Service Entrance Sections (SES), and Service Entrance Switchgear. All are UL 891 certified, built with genuine Siemens components, and available in NEMA 1 (indoor) or NEMA 3R (outdoor/weather-resistant) enclosures to suit a wide range of commercial, industrial, and utility applications.

Switchboards distribute power to multiple circuits and are front-accessible, typically used in commercial buildings. Switchgear offers higher interrupting capacity with individually enclosed breakers, suited for industrial and utility-grade applications. Panelboards are compact and branch-circuit focused, installed in walls or enclosures. DEI Power offers all three types in NEMA 1 and NEMA 3R enclosures with 480V configurations up to 4000A.

Yes. All DEI Power 480V main distribution panels — including Meter Mains, Switchboards, Panelboards, Switchgear, SES, and Service Entrance Switchgear — are available in NEMA 3R enclosures rated for outdoor, weather-resistant installation. NEMA 1 enclosures are available for indoor applications. Contact a specialist to confirm the appropriate NEMA rating for your project environment.

DEI Power's 3000A 480V main distribution panels are engineered for four primary industries: Commercial Buildings (large campuses and facilities requiring efficient power distribution), Industrial & Manufacturing (heavy-duty environments with large electrical loads), Utility & Infrastructure (substations and critical infrastructure requiring EUSERC-approved service entrance switchgear), and Data Centers & Colocation (hyperscale and enterprise operations requiring reliable, uninterrupted power via UL 891 certified switchgear).

DEI Power ships most orders within 1 business day from its 50,000 sq. ft. facility in Ontario, California. Standard delivery is 3–5 business days nationwide with free shipping included. In rare cases, up to 5 business days may be required for shipping. All panels include a 1-year warranty. For utility-grade service entrance configurations, lead times may vary based on utility-specific specifications.