IEM grew from a barn on a family ranch in Fremont, California, alongside the rise of Silicon Valley, and has spent more than 75 years building a reputation for solving difficult power-distribution challenges. Today, the company designs and manufactures custom electrical systems for critical environments, with more than 1.5 million square feet of manufacturing capacity supporting projects across North America. Its history includes pioneering CAD/CAM for electrical-equipment fabrication and developing specialized switchgear for demanding applications.
UL 891
Compliance program
UL 1558
Compliance program
UL 1008
Compliance program
UL 67
Compliance program
ANSI C37.20.1
Compliance program
CSA standards
Compliance program
NEMA PB-2
Compliance program
IEEE 344
Compliance program
ICC-ES-AC156
Compliance program
GRI Standards
Compliance program
CSA
Quality certification
Powercon CorporationFounded in 1954, Severn, Maryland-based Powercon Corporation engineers and manufactures custom metal-clad and metal-enclosed switchgear and specialized electrical power distribution systems. The company builds its own steel structures and weldments and assembles equipment in-house, tailoring configurations and delivery schedules to customer requirements. Powercon also operates electrical testing facilities and supports installed equipment with factory-trained field service engineers.SEVERN, MD
Lake Shore ElectricEstablished in Cleveland in 1922, Lake Shore Electric is a U.S.-owned, Bedford-based manufacturer with more than a century in the power distribution sector. Its in-house engineers and fabricators build custom switchboards for industrial, utility, and data center customers, with more than 50 years of experience producing UL-listed equipment.BEDFORD, OH
Penn Panel & Box CompanySince 1938, family-led Penn Panel & Box Company in Collingdale has designed, built, repaired and retrofitted custom electrical power-distribution equipment. Now in its fourth generation of Craven family leadership, the company is particularly suited to fitting new equipment into existing systems, from replacement panel interiors to medium-voltage switchgear. Its 24/7 emergency service includes fabricating replacement metalwork and busbar for damaged equipment.COLLINGDALE, PA
RESA Power, LLCFounded in 2003 through the San Jose launch of its Relectric components business, RESA Power provides mission-critical power-system services and equipment across the United States and Canada. Its network combines more than 40 service locations with specialty distribution, remanufacturing, transformer support, and a large inventory of vintage and hard-to-find electrical components. RESA also manufactures custom low- and medium-voltage switchgear, pairing its national reach with local field service.LOCKPORT, NY