Top 11 Switchgear Manufacturers in Pennsylvania 2026
Last updated
FirmsLedger lists 11 switchgear manufacturers headquartered in Pennsylvania. That ranks 6th among the 30 states with listings, behind Texas (23), California (23) and 3 other states. They are spread across 11 cities, including Aston Township, Belle Vernon, Canonsburg and Collingdale.
By specialty, Pennsylvania has electrical wire & cable (25), solar panels (13) and wiring harness (6) listings.
| Company | City | Specialty | Phone | Website |
|---|---|---|---|---|
| PEECO | Aston Township | Low voltage switchgear manufacturing | (484) 840-0860 | peecoenergy.com |
| Penn Panel & Box Co | Collingdale | Custom electrical power distribution equipment design and manufacturing | (610) 586-2700 | pennpanel.com |
| Pennsylvania Transformer Technology, LLC. | Canonsburg | Power transformer manufacturing (500 kVA – 750 MVA, through 765 kV) | (724) 873-2100 | patransformer.com |
| Sesco | Mont Alto | Design | (717) 749-3900 | sesco.com |
| A C Power Tech Inc | Belle Vernon | Manufacture and rebuild power distribution centers | (724) 684-6301 | acpowertechinc.com |
| Cleaveland/Price Inc | Trafford | Group-operated switch manufacturing (up to 345 kV) | (724) 864-4177 | cleavelandprice.com |
| Switchgear Solutions Ltd. (SSL) | Lancaster | Electrical equipment design and application | (717) 509-7060 | switchgearsolutionsltd.com |
| The Tri-M Group, LLC | Kennett Square | 24/7/365 service | (610) 444-1000 | tri-mgroup.com |
| MV Power | Erie | Engineering services | (814) 520-6385 | mvpower.us |
| HICO America Sales & Tech Inc | Pittsburgh | — | (412) 787-1170 | hicoamerica.com |
PEECO
Aston Township, Pennsylvania
Philadelphia Electrical Equipment Company (PEECO) was established in 1981 by founder and chairman Robert Guarini, P.E., in Aston Township, Pennsylvania, a suburb of Philadelphia. Originally a global provider of generators and power control systems, the company has since narrowed its focus to the design and manufacture of medium- and low-voltage switchgear and automated power control systems.
Penn Panel & Box Co
Collingdale, Pennsylvania
Penn Panel & Box Co. has operated from Collingdale, Pennsylvania, since 1955, after its founding in 1938 by Charles Edgar Craven in Philadelphia.
Pennsylvania Transformer Technology, LLC.
Canonsburg, Pennsylvania
Pennsylvania Transformer Technology (PTT) traces its roots to 1929 in Canonsburg, Pennsylvania, where the company now occupies a 1-million-square-foot, 18-building campus on 90 acres — a site that previously housed McGraw-Edison and Cooper Power Systems transformer operations. PTT designs and manufactures oil-filled power transformers ranging from 500 kVA to 750 MVA with voltage ratings through 765 kV, including generator step-up, autotransformers, pad-mount, unit substation, mobile, and specialty industrial transformers.
Sesco
Mont Alto, Pennsylvania
SESCO, an electrical contract manufacturer, was founded in 1983 by David Souders in Mont Alto, Pennsylvania. Beginning as a small wire harness operation, the company has grown into a full-service manufacturing partner operating an 88,000-square-foot facility in Pennsylvania.
The Tri-M Group, LLC
Kennett Square, Pennsylvania
The Tri-M Group, LLC is headquartered in Kennett Square, Pennsylvania, with additional offices in Lock Haven, Quakertown, Middletown (Delaware), and Baltimore (Maryland). The company was founded in 1964 by brothers Tom and Dick Musser as a small industrial and commercial electrical contractor.
MV Power
Erie, Pennsylvania
MV Power LLC operates from Erie, Pennsylvania, providing engineering services with a focus on medium voltage switchgear retrofill. The company positions itself as an on-demand engineering department for clients, though no founding year, ownership structure, or founder names are publicly disclosed.
- DVM ManufacturingNorth Wales, Pennsylvania