square-d-circuit-breaker Square D Electrical Supplies manufacture Breakers, Switchgear, Contactors and Motor Starters.  As one of the largest electrical manufacturers ESU carries a large and diverse inventory of Square D products, including  Circuit Breakers, Transformers, Meter Sections, Disconnects, Panel Board Switches, Switchgear, Contactors and Motor Starters. 

Electrical Supplies Unlimited is your trusted source for a wide range of electrical supplies, serving the needs of electricians and electrical companies throughout San Diego. Our commitment to delivering top-notch products and exceptional service sets us apart in the industry. Whether you're working on a commercial or residential project, our extensive inventory includes new and used Square D circuit breakers and a variety of other electrical supplies that meet the highest quality standards. We understand the importance of reliable electrical components in ensuring the safety and efficiency of any electrical system. That's why we take pride in offering products from reputable brands like Square D, known for their durability and performance. At Electrical Supplies Unlimited, we are dedicated to being your go-to partner, providing the essential tools and equipment that electricians rely on to get the job done right. Contact one of our representatives today at 858.558.2850 to find out more!

Our team at Electrical Supplies Unlimited is committed to making your electrical projects a success. With over 40 years of experience, we know how to get the job done. We understand that electricians and electrical companies demand efficiency, affordability, and quality in their supplies, and we deliver on all fronts. Our selection of Square D circuit breakers, alongside our comprehensive range of electrical products, ensures that you have access to the best tools in the trade. Whether you're looking for new components to keep up with the latest industry standards or seeking cost-effective solutions with our used options, we have you covered. When you choose Electrical Supplies Unlimited, you're choosing a partner that understands your needs and is dedicated to your success. Join our satisfied customer base in San Diego and experience the difference of working with a reliable and customer-focused electrical supplies provider.

Square D is an American manufacturer of equipment used to control and distribute electric power. They are headquartered in Palatine, Illinois.

Square D was founded in 1903 in Detroit, Michigan by Bryson Dexter Horton who is credited with the invention of the safety switch which encased high voltage switches and started the company's main line of business of circuit breakers and encased control panels.

We carry a large and diverse inventory of Square D products, including  Circuit Breakers, Transformers, Meter Sections, Disconnects, Panel Board Switches, Switchgear, Contactors and Motor Starters. Contact one of our representatives today at 858.558.2850 to find out more!