Specialist Electrical Switchboard Solutions

SES stands for service entrance switchgear. It is the equipment installed where utility power first enters a facility, providing the main disconnect, overcurrent protection, and distribution control for downstream electrical systems. In commercial and industrial settings, SES is typically engineered for higher amperage loads, code compliance, and safe maintenance access, making it a critical part of reliable facility power infrastructure.

DEI Power provides service entrance switchgear, low-voltage switchgear, switchgear supply, remote power panels, design and engineering services, and engineering support. These solutions are built for commercial, industrial, utility, and critical power applications. The company also supports custom configurations, documentation, and specification review so equipment aligns with project requirements before fabrication or shipment.

Yes. DEI Power offers UL 891-certified low-voltage switchgear and UL listed assemblies designed to support code-compliant installations. Equipment is built with genuine Siemens components where specified, and the team provides submittals, compliance documentation, and configuration guidance to help contractors, engineers, and procurement teams move through approval and installation with fewer issues.

DEI Power’s service entrance switchgear is available in amperage ratings from 400A through 4000A. Available options include 400A, 600A, 800A, 1000A, 1200A, 1600A, 2000A, 2500A, 3000A, and 4000A. This range supports everything from smaller commercial service entrances to large industrial and utility applications that require stable, heavy-duty power distribution and coordinated protection.

Yes. DEI Power offers design and engineering services for custom switchboard and power distribution equipment. Support includes concept development, electro-mechanical schematics, CAD layouts, component coordination, code compliance review, and finalized production-ready submittals. This process helps ensure the equipment fits the application, integrates properly with existing systems, and reduces costly changes during installation.

Many stocked orders ship within 1 business day, while some orders may require up to 5 business days depending on configuration and availability. DEI Power also offers free shipping on qualifying orders delivered in 3 to 5 business days. Their Ontario, California warehouse and in-house manufacturing capabilities help support faster fulfillment for time-sensitive projects and reduced schedule risk.

Yes. DEI Power manufactures and assembles switchgear in the USA and offers solutions that can support domestic sourcing requirements, including Buy America Build America compliance. The team also helps align configurations and documentation for projects where domestic manufacturing, compliance records, and specification accuracy are important to procurement, approvals, or public-sector requirements.

These solutions are designed for contractors, engineers, procurement teams, facility managers, and operators of commercial, industrial, utility, healthcare, manufacturing, and data center environments. DEI Power’s equipment is especially well suited for projects where uptime, code compliance, coordinated protection, and schedule certainty are essential. Applications range from campuses and plants to substations and critical infrastructure facilities.