High insulation resistance and dielectric withstanding voltage. environmental temperature:-55~85oC relative humidity:98% when ... ≥1000 after high level's life span≥100Main Contact load and life length:50A,60Vd.c,5×104 times3Φ,100A,115 ... times 3Φ,50A,380Va.c.,5×104 timesSecondary Contact load and life length:5A,28Va.c.,5×104 timesDielectric withstanding voltage ...