Electrical Supplies Unlimited supplies a large stock of  Medium Voltage Circuit Breakers (5-27kV).

Electrical Supplies Unlimited is your trusted source for high-quality medium voltage circuit breakers designed to protect critical electrical systems in commercial, industrial, and utility applications. Medium voltage systems typically operate in the range of 1,000 volts (1kV) up to 35,000 volts (35kV), making these breakers essential for substations, industrial facilities, data centers, and power distribution infrastructure. Our extensive inventory of medium voltage circuit breakers includes proven models from industry-leading manufacturers, ensuring reliable performance, long service life, and compliance with modern electrical standards.

Unlike low-voltage breakers rated at 600 volts and below, medium voltage circuit breakers are engineered to handle higher fault currents and more demanding operating environments. They play a critical role in protecting transformers, switchgear, and distribution equipment by safely interrupting overloads and short circuits before damage occurs. At Electrical Supplies Unlimited, we specialize in supplying dependable medium voltage circuit breakers that balance performance, durability, and cost-effectiveness—helping contractors, engineers, and facility managers maintain safe, efficient, and resilient power systems.

Electrical Supplies Unlimited is also a go-to source for high-quality medium-voltage circuit breakers (5-27kV), offering reliable solutions for industrial, commercial, and utility applications. Our extensive selection of medium-voltage circuit breakers ensures optimal performance, safety, and durability for power distribution systems. Whether you're upgrading an existing system or installing a new one, our expert team is here to guide you toward the best solutions for your electrical needs. With a commitment to superior quality and customer satisfaction, Electrical Supplies Unlimited is the trusted supplier for businesses looking for top-tier circuit breakers in the industry.

One key distinction between medium-voltage and low-voltage circuit breakers is their capacity and application. While low-voltage circuit breakers (typically rated below 1,000V) are designed for residential and commercial electrical panels, medium-voltage circuit breakers (ranging from 5-27kV) are essential for large-scale power distribution, industrial plants, and substations. Medium-voltage breakers are built to handle higher fault currents and provide enhanced arc flash protection, ensuring greater reliability in high-power environments. At Electrical Supplies Unlimited, we provide top-of-the-line medium-voltage circuit breakers tailored to your specific power needs, ensuring efficiency, safety, and long-term durability.

GE
Westinghouse-Cutler-Hammer
Siemens-Allis Chalmers
ABB-BBC-ITE-Gould
Federal Pacific
Square D

We will buy new and used Low & Medium Voltage Breakers

ESU Electrical Supplies Unlimited not only sells top-quality electrical components, but also buys both new and used equipment, including low and medium voltage circuit breakers. Whether you’re upgrading your system or decommissioning old gear, ESU offers a convenient solution by purchasing your surplus breakers and electrical parts. This helps reduce waste and puts valuable equipment back into circulation for future use.