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For 24-HOUR EMERGENCY SERVICE: 

(610) 312-8100 or (877) 312-8100

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A Customer Service Center You Can Count On

Our Customer Service Center hosts the largest warehouse and electrical inventory around, with dozens of supporting branches conveniently located to serve you and your needs.

Centrally Located

  • Our King of Prussia, PA location assures that we are close to our customers and major transportation routes.

$30+ Million Inventory

  • We have what you need most, when you need it.
  • Specialty items for any job requirement can easily be ordered.

24-Hour Services

  • Open 24 hours a day for will-call pickups
  • Available for 24/7 emergency calls

Gear and Lighting Project Teams

  • One of the largest and continually expanding gear and lighting team in the region
  • Uniquely qualified to deliver competitive quotes and full-service project management

Excellent Fill Rates

  • Extensive inventory means you can expect complete orders
  • Warehouse specialists are working around the clock to uphold the highest fill rates in the industry

50+ Delivery Vehicles

  • Our fleet is on the road by 5:00 a.m. or earlier daily

Our Divisions

In addition to our core electrical supply business, Colonial operates three divisions that deliver essential products and services for specific industries.


Teltek supports the outside plant, telecommunication and utility industries in the design and construction of aerial installations, conduit systems, fiber optic cabling and more.

Colonial Major Projects offers products, technical support, project management and design for large federal, public and private projects throughout the U.S. and globally.



A source for unlimited lighting possibilities, Bright Light offers luxury lighting styles and fixtures of every kind, as well as fans, accent furniture and more.


Our Service Warehouse Also Includes:

Project Storage

Are you out of space to store materials for your next job? Colonial has you covered with inside project storage capabilities.

Pulling Heads

Colonial’s expansive stock of pulling heads and color feeders will meet your every need.
Learn more here.


Keep up to date with the latest products, special offers and news.

Colonial Electric Supply and it's divisions is a product supplier only. We do not serve as project engineers. Rather, we work with project engineers towards their design goals. We expect customers to obtain and use products in accordance with the manufacturer's intended use. We are not responsible for product malfunction due to misuse, with the exception of replacement per stated warranty conditions.

For 24-HR EMERGENCY SERVICE please call:

(610) 312-8100 or (877) 312-8100