... Rated voltage:144V,DC current:400A 1.ApplicationGSZ1 series D.C. contactor is mainly used for DC operating voltage ... using plug-in type,quick and convenient wiring;C-type and L-type mounting accessories for easy ... installation condition Ambient air temperature is -25°C~+40°C ,the 24h average value is less than + ... 40°C ;When temperature is +40°C , relative air humidity is not ...