LC1-D NEW series A.C contactors are suitable for frequency 50/60Hz, rated insulation voltage up to 1000V, rated operation current 9~330A under AC-3 duty.It is mainly used for making/breaking electric circuits at a long distance & for frequent starting/stopping & controlling AC Motor It is used in combination with thermal relay to compose a magnetic motor starter, The product conforms to GB14048.4, IEC60947-4 & VDE0660 standards.