Recently, in order to provide more electrical power in road vehicle, a need to increase voltage from 14V to 42V has arisen. Wiring harness will be one of the most important components in 42V system, but it has a variety of anticipated subjects to be resolved. Especially, arc discharge phenomenon which occurs while unmating connectors supplying power to a 42V4oad is a serious problem. Our experiment showed that the connector terminal damage from arcing was approximately 5mm in length, and peak temperature of the terminal was estimated more than 1,000℃ with 3kW-load. To resolve the problem, a new type of connector for 42V automotive electrical system has been developed. This connector can substantially reduce arc energy between terminals.
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