In the beginning Heinemann engaged solely in the installation of electrical wiring systems. Unlike today, the equipment used by electrical installers was not readily available, so Heinemann had to make its own. Two key components, knife switches and fuse circuits, started Heinemann on the path of circuit protection and control, its field of specialization ever since.
OVER THE LAST 40 YEARS
In 1927, the company began development of an automatic protective device that could be reset rather than replaced – the circuit breaker. In 1932, Heinemann patented a radically different kind of circuit breaker, the hydraulic-magnetic breaker. The major advantage of this new circuit breaker was the elimination of heat-induced nuisance tripping, a problem with thermal-type circuit breakers on hot days or when they were located near heat generating equipment. The new magnetic circuit breaker is tripped by a solenoid, taking advantage of the overcurrent that occurs by default.
MORE ABOUT US!
Today, Heinemann offers a wide range of OEM circuit protectors, with ratings from 0.01 to 1200 amperes. Their applications include computers, healthcare equipment, pleasure boats, and naval vessels, communications systems, electric locomotives and space vehicles.
- 1950 – Series AM – 0.02-100A developed for Aircraft and Telecommunications
- 1960 – Seried HM – 0.05-20A sealed package – for the military
- 1960 – Series C E-Frame – 0.01-120A customized for precision panel board and air conditioning applications
- 1967 – Series J/S – 0.02-50A circuit breakers for equipment
- 1979 – KD1 – 0.25-15A push to reset in fuse holder size package
- 1980 – Series GH EH Frame – 0.5-100 A small size, for air conditioning equipment
- 1982 – Series GJ High Current – 100-250 A service entrance for DC applications
- 1985 – PS1 Fuse-Switch – to 20A saves panel space by combining a fuse holder and on/off switch
In 1992 Heinemann Products was purchased by the Commercial Controls Division of Eaton – a Ten (10) Billion Dollar Corporation. This arrangement provides extensive financial and technological resources for the development of existing and future products. Heinemann Electric Canada is an Eaton Heinemann Products licensee.
Products described in this catalogue are covered by one or more patents.