... 380V,DC Voltage:220V 1.ApplicationJSK4-d range air time-delay contactor relay is used in ... 22d contactor way relay and SK4-d range air time-delay terminal. JSK4 is arranged by ... and SK4 range air time-delay terminal, all accord air damping theory, use powder metallurgy unit as air filters, regulate ... marine relay Ambient temperature: -25°C~+60°C;Air condition: be able to bear the influence of moisture ...