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, whether new, used, surplus or reconditioned, 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.
Types of Electrical Fuses Available at ESU
Electrical fuses are manufactured in different classes, sizes and configurations to meet the protection requirements of specific electrical systems. The correct fuse depends on the application, voltage rating, amperage, interrupting capacity and characteristics of the equipment being protected. Electrical Supplies Unlimited helps customers locate a wide range of electrical fuses for commercial, industrial and residential applications, including standard replacement fuses and hard-to-find products.
Our fuse offerings include Class J fuses, Class T fuses, HVAC fuses, midget fuses and other specialty electrical fuses. We also source fuses across a broad range of amperage ratings, including 100 amp fuses, 200 amp fuses and larger industrial applications. Whether you need a common replacement fuse or a specific product for older electrical equipment, ESU can help identify available options.
Class J and Class T Electrical Fuses
Class J fuses are commonly used in commercial and industrial electrical distribution systems. They are available in different amperage and voltage ratings and are designed for applications requiring current-limiting overcurrent protection. Depending on the specific fuse design, Class J products may be available in time-delay or fast-acting configurations. They are frequently used in electrical panels, disconnect switches and other equipment requiring properly coordinated fuse protection.
Class T fuses are compact, fast-acting, current-limiting fuses known for their high interrupting capacity. Their small physical size makes them useful in installations where space is limited and high levels of short-circuit protection are required. Class T fuses are used in various commercial and industrial applications, including electrical distribution equipment and certain power and renewable energy systems.
ESU can help customers source both Class J and Class T fuses from leading manufacturers. The specific fuse class, voltage, amperage and performance characteristics must match the equipment and application. A fuse from one class should not be substituted for another simply because the physical dimensions or amp rating appear similar.
100 Amp, 200 Amp and High-Amperage Fuses
Electrical Supplies Unlimited sources fuses across a wide range of amperage ratings, from smaller control and equipment protection applications to larger electrical distribution systems. Common requirements include 100 amp fuses, 200 amp fuses and industrial fuses rated up to 3,000 amps. These products are used in a variety of applications, including service equipment, commercial electrical panels, industrial machinery and power distribution systems.
When selecting a replacement fuse, the amperage rating is only one part of the identification process. Voltage rating, fuse class, interrupting capacity, physical dimensions and time-delay characteristics can all affect whether a particular fuse is suitable. Providing the original manufacturer and part number is often the best way to identify the correct replacement.
HVAC Fuses and Specialty Electrical Fuses
HVAC systems rely on properly rated electrical protection components to help protect compressors, motors, control circuits and other equipment from overcurrent conditions. ESU supplies HVAC fuses and circuit breakers for heating and cooling equipment. These products are available in different sizes and electrical ratings depending on the equipment manufacturer's requirements.
ESU can also help locate specialty products such as midget fuses and other compact fuse configurations. Midget fuses are commonly used for supplemental overcurrent protection in control panels, small motors, solenoids and other electrical equipment where a compact protective device is required. Identifying the original fuse type and part number helps ensure that the replacement is appropriate for the equipment.
New, Surplus and Obsolete Electrical Fuses
Electrical Supplies Unlimited buys and sells new and unused surplus electrical fuses. We understand that contractors, distributors and industrial facilities sometimes need specific fuse models that are no longer readily available through traditional electrical supply channels. Our experience in the electrical supply industry allows us to help locate discontinued products and specialty fuses for existing equipment.
ESU also purchases surplus electrical inventory, including unused fuses, excess stock and fuse holders. Businesses with surplus electrical components can contact us to discuss the products they have available. Whether you are trying to locate a hard-to-find fuse or liquidate excess inventory, ESU provides another resource for buying and selling electrical supplies.
Explore Our Electrical Fuse Products
Visit the following pages to learn more about the specific fuse types and products available through Electrical Supplies Unlimited: