Cutler Hammer is a brand of Eaton Corporation, a major manufacturer of electrical equipment including busway. They manufacture four distinct lines of busway including 100 amp, Pow-R-Flex (rated 150 to 600 amps), Pow-R-Way III (rated 225 to 5800 amps), and non-segregated phase bus duct (rated 1200 to 5000 amps). If you don't see or you don't know what you're looking for, relax. We got you covered. Call us up and be confidant that when you buy from LiveWire, we'll get you what you need.