Switchgear
The Tri-M Group, LLC
206 Gale Ln, Kennett Square, PA 19348, United States
- Installer / service company
- Founded 1964
- over 500 employees
- Employee-owned
About The Tri-M Group, LLC
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. Today Tri-M employs over 500 people and provides design, installation, and ongoing service for high-voltage electrical construction, building automation systems, data and telecommunications networks, security solutions, and energy analytics. The company operates a panel fabrication shop and offers 24/7/365 emergency and scheduled maintenance, remote engineering support, and a proprietary online project tracking tool called ProNav. Tri-M serves industrial and commercial clients across the Mid-Atlantic region, including facilities that require energy benchmarking, building automation upgrades, secure network infrastructure, and high-voltage electrical work. The firm emphasizes a culture rooted in safety, ethical decision-making, collaborative problem-solving, and superior service delivery. Leadership states that the ESOP structure was chosen to preserve the company’s independence, retain its workforce, and continue the legacy of founder Tom Musser, who believed in giving back to the community and empowering employees.
Manufacturing capabilities
Industries served
- Commercial
- Industrial
- Energy management
- Building automation
- Security systems
- Telecommunications
Company details
- Location
- Kennett Square, Pennsylvania
- Company type
- Installer / service company
- Employees
- over 500
- Founded
- 1964
- Ownership
- Employee-owned
- Listed under
Frequently asked questions
Where is The Tri-M Group, LLC located?
The Tri-M Group, LLC is located at 206 Gale Ln, Kennett Square, PA 19348, United States.
What does The Tri-M Group, LLC do?
The Tri-M Group, LLC is listed under Switchgear, and its listed capabilities and products include 24/7/365 service, Emergency service, Scheduled maintenance, Flexible service contracts, Building automation services and Security system services.
What industries does The Tri-M Group, LLC serve?
The Tri-M Group, LLC lists Commercial, Industrial, Energy management, Building automation and Security systems among the industries it serves.
When was The Tri-M Group, LLC founded?
The Tri-M Group, LLC was founded in 1964 and has over 500 employees.
How do I request a quote from The Tri-M Group, LLC?
Use the Request a quote button on this page to send The Tri-M Group, LLC your requirements through FirmsLedger, or call (610) 444-1000 and visit tri-mgroup.com.
What companies are similar to The Tri-M Group, LLC?
Other Switchgear companies in Pennsylvania listed on FirmsLedger include PEECO, Sesco and A C Power Tech Inc.