Abstract
In recent years, battery-electric vehicles, hybrid-electric vehicles, fuel-cell vehicles or industrial inverters are being mass-produced which use DC high-voltage high-current. Because of this, a highly reliable electric relay, which assures the shutdown of circuits in a situation where the electric current exceeds 500A, has required development as a safety measure. A new type of electric relay for DC high-voltage high-current power is developed by applying a radial component magnetic field to the relay's contact point. Evaluation tests are conducted and the results indicate that the performance of the new relay is significantly higher in comparison to conventional products.
