400 Amp Power Distribution Centers & Loadcenters

A Remote Power Panel (RPP) is designed for downstream distribution in data centers and critical power environments, typically wall-mounted close to IT loads with up to 84 branch circuits. A panelboard is a more general-purpose distribution assembly used in commercial and industrial settings. Both are UL listed and built with Siemens components at DEI Power, but they serve distinct application environments.

Yes. All DEI Power 400A power distribution products are UL 891 certified. This certification confirms that the assemblies meet established safety standards for low-voltage switchgear and switchboards. Products also carry EUSERC Approval and are built as Siemens Approved OEM assemblies, ensuring compliance with utility and code requirements across commercial, industrial, and data center applications.

DEI Power's 400A distribution equipment is available in multiple voltage configurations including 120/240V, 240V, 208Y/120V, 480V, 480Y/277V, and 415/240V. For data center applications, 208Y/120V (3-Phase, 4-Wire) and 480Y/277V are the most common configurations. Custom voltage options are available based on project specifications — contact an RPP or switchgear specialist to confirm compatibility.

In-stock 400A units ship within 1 business day from DEI Power's Ontario, California facility, with delivery in 3–5 business days. Built-to-order configurations carry typical lead times of 4–6 weeks. This is significantly faster than the industry standard of 14–16 weeks, making DEI Power a preferred source for emergency replacements and time-critical deployments.

Yes. DEI Power's switchboards, panelboards, switchgear, service entrance sections, and meter mains are available in both NEMA 1 (indoor) and NEMA 3R (outdoor, weather-resistant) enclosures. NEMA 3R units are suitable for outdoor installation where exposure to rain or weather is a concern. All enclosures meet seismic compliance requirements per UBC, CBC, and IBC standards for all seismic zones.

Yes. DEI Power's 400A Remote Power Panels support optional branch circuit monitoring. This allows facility and data center teams to track power consumption at the individual circuit level, supporting capacity planning, load balancing, and proactive maintenance. Monitoring options can be configured at the time of order — contact an RPP specialist at (866) 773-8050 to discuss monitoring requirements for your project.