Churod Americas, Inc. 400A High Voltage Direct Current Relay CHEV-H400

The CHEV-H400 is a 400A high voltage DC relay for electric vehicles, charging, and energy storage systems. It uses ceramic brazing and hydrogen gas filling to ensure arc containment and low, stable contact resistance. It supports continuous 400A operation at 85°C with a 450 Vd.c. or 750 Vd.c. switching rating, delivering up to 300 kW switching power. Dielectric strength is 4.0 kV between coil and contacts, with 1000 MΩ insulation resistance. It withstands 10,000 A short circuits for 5 ms without fire or explosion. Mounting is via M6 screw terminals, with outline dimensions of 95.8 mm × 95 mm × 49 mm and a weight of 760 g. It operates from -40°C to 85°C and tolerates 5% to 85% RH humidity. Mechanical endurance is 2×10⁵ operations at a 0.5s:0.5s on-off ratio.