... Authoritative certificate:CCC, CE,EU, TUV & ROHS 3.Rated voltage:380V,DC Voltage:220V 1.ApplicationJSK4-d range air time-delay contactor ... is used in 50Hz(or 60Hz),rated voltage up to 380V or DC voltage up to 220V automatic control circuit, for ... 80Hz and acceleration ±7m/s2Power voltage and frequency changes: steady-state voltage is +6%~-10% of rated voltage, steady-state frequency change is ±5% or ...