3000A Circuit Breaker Switchboards — 480V 3-Phase

A 3000W load at 120V single-phase draws approximately 25 amps, so a 30A breaker is typically appropriate per NEC's 80% continuous load rule. However, this category covers 3000A switchboards for 480V 3-phase commercial and industrial applications — a fundamentally different scale. For large power distribution systems, breaker sizing should be engineered to match full system load calculations.

DEI Power's 3000A switchboards are UL 891 certified, EUSERC Approved, and manufactured as a Siemens Approved OEM. They also meet UBC, CBC, and IBC seismic requirements for all seismic zones, making them compliant for a wide range of commercial, industrial, and utility installations across the USA.

DEI Power's switchboards support multiple voltage configurations including 120/240V, 240V, 208Y/120V, 240/120V, 480V, 480Y/277V, and 415/240V. The 480V 3-phase configuration is the most common for heavy commercial and industrial applications, supporting high-amperage loads from 400A up to 4000A.

NEMA 1 enclosures are designed for indoor use, providing protection against dust and incidental contact. NEMA 3R enclosures are weather-resistant and rated for outdoor installations, protecting against rain, sleet, and external ice formation. DEI Power's 3000A switchboards are available in both ratings to accommodate diverse installation environments.

DEI Power's switchboard and switchgear product line covers a broad amperage range: 400A, 600A, 800A, 1000A, 1200A, 1600A, 2000A, 2500A, 3000A, and 4000A. This flexibility allows engineers and contractors to select the exact configuration required for their commercial, industrial, or utility project specifications.

DEI Power ships most orders within 1 business day from their 50,000 sq. ft. facility in Ontario, California, with standard delivery in 3–5 business days. In rare cases, up to 5 business days may be required for fulfillment. Custom utility-spec configurations require a specialist consultation prior to order placement. All orders include free shipping and a 1-year warranty.