Method of connecting cables to the start/stop control button of an AC contactor

2022-05-05 0 By

The following uses the commonly used C2510 AC contactor as an example to describe how to connect cables: Power cables L1, L2 and L3 are connected to terminals 1, 3 and 5 of 2510 contactor through a circuit breaker, and the output terminals 2, 4 and 6 of contactor are connected to the load through a thermal relay.Contactor start-stop control wiring:A1 of the contactor is connected to 1L1 of 2510 (the working voltage of my wire package is 380 VOLTS AC, 220 volts should be connected to zero line), one end of the stop button (red line below) is connected to 5L3(3L2 can also be connected), and the other end is connected to one end of the start button (yellow line below) to the 13NO terminal of 2510 contactor.Connect the other end of the start button (blue line below) to the 14NO terminal of the contactor, and then lead a wire from the 14NO terminal to the A2 terminal below the contactor.Note: 1. Be sure to check the rated voltage of the contactor control wire package (commonly used 380v ac, 220V AC, 36V AC) before wiring!!2. Contactor control line package A1A2 wiring regardless of polarity (that is, if the working voltage is 220 V, A1 can be connected with live line or zero line;Any phase of the three phases can be connected at 380 VOLTS).