... pushbutton series was used in control circuit of AC 50/60 Hz, voltage to 660V. It is used for controlling signal ... series suitable for electrical appliance circuit of AC voltage 380V, 50/60 Hz, DC voltage up to 380V. It is used as ... :-5~+40°COperational humidiy:45%~90%(No condensation)Power-frequency withstand voltage;2500V AC,1min Contact resistance:≤50mΩMechanical durability:momentary 1000000 ...