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Common Types of Circuit Breakers.jpg) Medium-voltage air breakers. From the early 1900s until the earliest 1980s, 5 and 15 KV breakers were either oil or air break type and in the second half of that period it was all air. The very largest industrial installations built before 1980 will still be running large distribution through air circuit breakers. Yet their major manufacturers are very little help when parts or replacement breakers are needed to keep a plant running. That is where we come in. We can also often provide vacuum retrofitted breakers to replace your failed air breakers as easily as rolling it into the existing cabinet.Air circuit breakers. A step heavier than insulated case breakers, air breakers are completely modular with more of the internal parts and subassemblies externally accessible. These are designed for very long service life. Many generations of these products were made backwards compatible or conversely upgradeable to new products without replacing their switchgear. More recent generations of all manufacturers’ products are not backwards compatible, making our inventories of used and unused surplus product very important for keeping you up and running or allowing you to expand your existing gear. If you have a 15-year-old piece of switchgear, it is still in its youth as far as its design life, but its manufacturer stopped supporting it long ago. That is where we step in, and this product is one of the best examples of how we can help you keep the lights on and the conveyors moving. Medium-voltage vacuum breakers. Like air circuit breakers, these breakers have been available since the early 1980s and will remain the standard for years to come, as this is a vastly superior technology. Our inventories are growing and are available to get you back online now. Insulated-case circuit breakers. These larger size breakers can be customized with programmers and accessories and are field serviceable. These devices are found in heavier applications — usually industrial facilities where the product is expected to withstand more demanding service. Our inventory and service technicians are well up to the task, and this product has us out in the field for service and repair more often than any of our other product lines.  Molded case circuit breakers are in your home panelboard, schools and commercial buildings, gas stations and strip malls. This is the most common type of low-voltage circuit protective device, and we have the country’s largest and most comprehensive inventory. ROMAC has the most structured and rigid work scope for reconditioning them, with 24/7 service to get it for you when you need it.
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