How to Wire a Contactor: 8 Steps (with Pictures) - wikiHow MethodWarningsThings Needed Acquire the contactor. Make sure that the contacts of the contactor are rated in both voltage and current to handle the expected load that will be required by the equipment being powered. Contactors are available from building and construction supply stores, as well as some larger hardware stores.Study the contactor manufacturer information. The manufacturer information will identify the 2 input pins for 120 volts AC control. The may be 2 or more sets of output contacts identified. These contacSee all 8 steps on wwwhowLast updated: Jul 28, 2015Views: 241K LC1-F lc1-d 1300A 3 pole electromagnetic ac contactor LC1-F lc1-d 1300A 3 pole electromagnetic ac contactor wiring switch is for long distance breaking and closing the circuit and frequently starting and control ac motor. Its rated current can be up to 2750A.