Toshiba's HCV-5HA was the first vacuum contactor produced in Houston, Texas, and was also the first to incorporate an electronic drive unit to power the operating coils. This solid state design eliminated the economizing resistors and improved the reliability of the coil circuit. The HCV-5HA is available as electrically-maintained or latched-type versions. Its compact size and high performance, as well as the availability of a drawout design, has helped many OEMs and end-users replace old air-break contactors and breakers.

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