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How to wire the three-phase foot switch?

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First of all, it is clear that the foot switch is composed of three lines, which are divided into normally open lines, normally closed lines and common lines. When wiring, just connect the normally open line and the common line, one is connected to the neutral line of the power supply, and the other is connected to the live line of the power supply. However, if the rated current of the appliance is very large, an AC contactor must be used.

Three-phase foot switch connection method: the normally open contact in the foot switch is connected in series between the power supply and the 380v AC contactor coil, the foot switch has three wires, one control wire is normally open, and one control wire is normally open. Closed, the other is the common line of normally open and normally closed, we only use one control line is normally open, and the other is the common line of normally open and normally closed. Use a multimeter to measure the on-off block, connect any two sticks to any two sticks, press the foot switch to pass, and release the two sticks. An AC contactor must be used, and the normally open two ends of the foot switch are connected in series in the control loop of the AC contactor coil.

The normally open contact in the foot switch is connected in series between the power supply and the 380v AC contactor coil. It is a switch that can be used to operate the circuit by stepping on or stepping on it, and it can also be used to control the size of the output current. The inner structure of the foot switch is a group of normally open and normally closed. In a 380V circuit, to control a three-phase motor, an AC contactor must be used. . If the control is a 380V two-phase electrical appliance, if the rated current of the electrical appliance is less than the rated current of the foot switch contact, the foot switch can be directly connected to the 380V two-phase electrical circuit. , must use an AC contactor. However, from the perspective of safe electricity use, the rated voltage of the AC contactor coil should be below 36V, and a control transformer should be added to the control loop.

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