ESU stocks new and used Electrical Fuses

Our large selection of fuses up to 3000 amp will usually satisfy most requirements for your job. We carry many brands including Buss and Little Fuse among others. Call today and get your fuse requirements fulfilled at Electrical Supplies Unlimited

Welcome to Electrical Supplies Unlimited (ESU Inc), your trusted partner in the electrical supply industry for over four decades. With a rich history spanning 40 years, ESU has been at the forefront of providing top-notch electrical solutions to the vibrant community of electricians in San Diego. Our commitment to excellence and customer satisfaction has made us a go-to destination for professionals seeking reliable electrical supplies.

At ESU Inc, we specialize in the purchase and sale of electrical fuses, ensuring that our inventory meets the highest standards of quality and reliability. Our extensive experience in the industry allows us to curate a comprehensive selection of electrical supplies, catering to the diverse needs of electricians across San Diego. As a seasoned player in the market, ESU combines a legacy of trust with a forward-thinking approach, staying abreast of industry trends to offer cutting-edge solutions. Whether you're a seasoned professional or just starting, ESU Inc is here to empower your projects with the finest electrical supplies, backed by unparalleled expertise and a commitment to excellence that stands the test of time.

An electrical fuse is a current interrupting device which protects an electrical circuit in which it is installed by creating an open circuit condition in response to excessive current.

When the element in a fuse receives too much heat it will melt and interrupt the current. Fuses are usually used as a conduit between an electrical power source and an electrical component or a combination of components arranged in an electrical circuit. A fusible link is connected between the fuse terminals. This means that when an electrical current passing through the fuse goes beyond what the device is able to handle, the fusible link will melt and the circuit opens thus preventing electrical component damage.

Fuses are typically made for single time use. In other words, once it shuts a device down it must be replaced. You can get over-current protection from a variety of sources such as circuit breakers, switches, and relays. Each type of equipment has variations in ratings, service requirements and costs. Fuses are typically the most economical means for providing automatic high-voltage current protection against a single over-current failure.  Contact Electrical Supplies Unlimited for your electrical fuse supply needs.