EPCOS / TDK HVC High Voltage Contactors

HVC is designed as bipolar, allowing connections independent of polarity. This design provides an advantage during assembly and further allows the charging and discharging of a battery without using a second contactor.

The hermetically sealed and gas-filled arc chamber enables a clear break with fast switching. The HVC series switches extremely fast. While switching off, HVC extinguishes the electric arc within milliseconds without causing electromagnetic interference. This action also reduces the heat generated by the arc to a minimum to ensure a long lifetime for the contacts.

Stuck detection, as an option, allows monitoring for trouble-free switching. In case the contactor is stuck, the Aux COM and Aux NO wires will be short, the circuit is closed, and the LED will be on (see example circuit). The Aux COM and Aux NC wires work the opposite way: the LED is off when the contactor is stuck. Stuck detection is located at the opposite side, away from the arc chamber to avoid influence from the main switching operation. Stuck detection may also be known as state-control or auxiliary contact.

An integrated temperature sensor, as an option, ensures safe operation. Loose cables or bus bars lead to increased contact resistance and increased heat. The integrated temperature sensor indicates increased temperatures on the spot for safe operation. An integrated voltage sensor, as an option, allows direct measurement of voltage drop at the main contact.