... .Rated voltage:380V,DC Voltage:220V 1.ApplicationJSK4-d range air time-delay contactor relay is used in 50Hz(or 60Hz ... way relay and SK4 range air time-delay terminal, all accord air damping theory, use powder metallurgy unit as air filters, regulate knobs, and ... categories: class Ⅱ;marine relay Ambient temperature: -25°C~+60°C;Air condition: be able to bear the influence of moisture in ...