Built for Mid-America Services
Delivered Sep 2026 a six-figure program
Units
Product
Amperage
Voltage
Bus
Enclosure
Interrupting rating
Listing
Breakers
Built in
For two sites in the central U.S., Mid-America Services needed two 3000A, 480Y/277V main distribution switchboards, each with a 3000A LSIG main breaker, a 120V shunt trip, 65 kA bus bracing, a 200 kA surge protective device and its own schedule of feeder breakers.
Two UL 891 low-voltage main distribution switchboards, each 3000A at 480Y/277V, three-phase four-wire, 65 kAIC, in a NEMA 1 indoor enclosure with tin-plated aluminum bus braced for 65 kA and front-accessible terminations. Each is built around a Siemens WL 3000A main breaker with an LSIG trip unit, a 120V shunt trip and Dynamic Arc Flash Sentry for arc-energy reduction under NEC 240.87, and carries ten 65 kAIC distribution breakers, a 200 kA surge protective device and spare breaker provisions laid out for its own site. One DEI submittal, dated June 2026, covers both boards.
| Qty | Item | Rating | Voltage | Enclosure | Bus | Notes |
|---|---|---|---|---|---|---|
| 1 | Main distribution switchboard | 3000A | 480Y/277V 3Ø 4W | NEMA 1 | Tin-plated aluminum | 65 kAIC; UL 891 low-voltage; Siemens WL 3000A LSIG main with 120V shunt trip and Dynamic Arc Flash Sentry; ten distribution breakers, 200 kA SPD, spare provisions; bottom-fed |
| 1 | Main distribution switchboard | 3000A | 480Y/277V 3Ø 4W | NEMA 1 | Tin-plated aluminum | 65 kAIC; UL 891 low-voltage; Siemens WL 3000A LSIG main with 120V shunt trip and Dynamic Arc Flash Sentry; ten distribution breakers, 200 kA SPD, spare provisions; bottom/back-fed |
Engineered, fabricated and assembled under one roof in Jurupa Valley, California.
Each board’s distribution section was laid out to its own site’s feeder schedule, and its incoming feed arranged for that site: bottom-fed for one, bottom/back-fed for the other. The bottom/back-fed board shipped in August 2026 and the other has also shipped; both are delivered as of September 2026.
Two 3000A main distribution switchboards from one DEI submittal, shipped to two states and both delivered: a six-figure program.
From DEI’s submittal, Jun 2026
| Qty | Item | Rating | Voltage | Enclosure | Bus | Notes |
|---|---|---|---|---|---|---|
| 1 | Main distribution switchboard | 3000A | 480Y/277V 3Ø 4W | NEMA 1 | Tin-plated aluminum | 65 kAIC; UL 891 low-voltage; Siemens WL 3000A LSIG main with 120V shunt trip and Dynamic Arc Flash Sentry; ten distribution breakers, 200 kA SPD, spare provisions; bottom-fed |
From DEI’s submittal, Jun 2026
| Qty | Item | Rating | Voltage | Enclosure | Bus | Notes |
|---|---|---|---|---|---|---|
| 1 | Main distribution switchboard | 3000A | 480Y/277V 3Ø 4W | NEMA 1 | Tin-plated aluminum | 65 kAIC; UL 891 low-voltage; Siemens WL 3000A LSIG main with 120V shunt trip and Dynamic Arc Flash Sentry; ten distribution breakers, 200 kA SPD, spare provisions; bottom/back-fed |
4000A meter-main service
UL 891 low-voltage meter-main switchgear at 480Y/277V, 65 kAIC, with utility metering and protective relaying.
Delivered Sep 2026
3 switchboards for sites on three islands
A 3000A meter-main, a 2000A service switchboard and a NEMA 4X stainless solar board for three projects in Hawaii.
Jun 2026 – Oct 2026
10 × 4000A, copper bus
Ten 4000A UL 891 low-voltage main-disconnect switchboards, each with one LSIG main breaker and silver-flash copper bus.
Sep 2026 – Oct 2026
Company names identify who DEI’s orders are for. Their use does not imply endorsement of DEI.
Dates, quantities and turnarounds as of September 2026, from DEI’s build and order records. Images are representative unless marked otherwise.
Office Location
4725 Troy Ct.
Jurupa Valley CA 92509
Contact Info
Phone: +1 (866) 773-8050
Email: sales@deipower.com
