208Y/120V Panelboards — NEMA 3R with Circuit Breakers

Panelboards are available in multiple voltage configurations. The 208Y/120V rating is a three-phase, four-wire system commonly used in commercial buildings, providing 208V line-to-line and 120V line-to-neutral. Other common voltage ratings include 480Y/277V, 120/240V, and 415/240V, depending on the application and facility requirements.

NEMA 3R is an enclosure rating indicating the panelboard is suitable for outdoor or weather-exposed installations. It provides protection against rain, sleet, and ice formation. This makes NEMA 3R panelboards ideal for exterior mounting on commercial buildings, industrial facilities, and utility infrastructure where indoor NEMA 1 enclosures are not appropriate.

Yes. All 208Y/120V NEMA 3R panelboards offered by DEI Power are UL listed assemblies compliant with UL 891 standards. They are built with genuine Siemens components under Siemens-approved OEM authorization, ensuring the assembly meets established safety and performance standards required for commercial and industrial installations.

208Y/120V NEMA 3R panelboards are available across a wide range of amperage ratings, including 400A, 600A, 800A, 1000A, 1200A, 1600A, 2000A, 2500A, 3000A, and 4000A. This broad range supports applications from standard commercial branch distribution to heavy-duty industrial and utility power systems requiring high-capacity overcurrent protection.

These panelboards are widely used in commercial buildings, industrial facilities, utility and infrastructure projects, and data centers. The NEMA 3R enclosure makes them particularly suited for outdoor electrical rooms, rooftop installations, and exposed industrial environments where weather resistance and code compliance are critical to system reliability.

DEI Power ships most panelboard orders within 1 business day from their 50,000 sq. ft. facility in Ontario, California. Standard delivery is 3–5 business days with free shipping on all orders. Built-to-order configurations with custom specifications typically carry a 4–6 week lead time, with dedicated project support provided throughout the process.