TGCH1N series modular contactors (hereinafter referred to as contactors) are mainly used in AC 50Hz (or 60Hz) power circuit with a rated working voltage up to 400V, rated working current up to 63A under use category AC-7a, and rated working current up to 20A under use category AC-7b to control the household appliances and low-inductance micro-inductance loads with similar purposes, and also can be used to control the household motor loads, and in this case the control power should be reduced accordingly.