UL Listed Wall Assemblies & Fire Rated Designs

UL Listed means that a product has been independently tested and evaluated by Underwriters Laboratories (UL) and found to comply with established safety standards. For switchgear and panelboards, UL Listing under UL 891 indicates the equipment has been manufactured and assembled to meet recognized electrical safety benchmarks. It is a critical requirement for code compliance on most commercial and industrial electrical projects.

You can verify a product's UL Listing by searching the UL Product iQ database at iq.ul.com using the product's file number, category code, or manufacturer name. DEI Power's assemblies carry UL 891 certification as an approved Siemens OEM. Documentation confirming UL Listing is available upon request for any product in our catalog.

DEI Power's UL Listed assemblies are available from 400A to 4000A across product types including switchboards, switchgear, panelboards, meter mains, service entrance sections, and remote power panels. Multiple voltage configurations are supported, including 120/240V, 208Y/120V, 480Y/277V, and 415/240V, accommodating a wide range of commercial and industrial applications.

Yes. All DEI Power UL Listed assemblies are available in NEMA 1 (indoor) or NEMA 3R (outdoor weather-resistant) enclosures. NEMA 3R units are designed to withstand rain, sleet, and external ice formation, making them suitable for outdoor service entrance and utility applications without additional weatherproofing.

Yes. All DEI Power assemblies comply with UBC, CBC, and IBC requirements for all seismic zones. This makes them suitable for deployment across earthquake-prone regions in California and nationwide, meeting the structural integrity standards required by local authorities having jurisdiction (AHJ) for high-seismic installations.

Yes. Many product types such as service entrance sections and meter mains must be built to approved utility specifications per utility standards. DEI Power's engineering team and dedicated project support specialists work with customers to configure assemblies that meet utility company requirements, EUSERC approval standards, and project-specific electrical design needs.