How is the foot switch wired?

The foot switch is used to switch on and off the operating circuit by stepping on or stepping on it, and can also be used to control the output current.

The internal structure of the foot switch is a set of normally open and normally closed. In a 380V circuit, an AC contactor must be used to control a three-phase motor. The normally open two ends of the foot switch are connected in the AC contactor coil control loop. . 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. If the rated current of the electrical appliance is too much than the rated current of the foot switch contact , An AC contactor must be used. But 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.

The foot switch has three wires, one control wire is normally open, one control wire is normally closed, and the other is a common wire for normally open and normally closed. We only use one control wire for normally open and the other It is the common line of normally open and normally closed. Use a multimeter to measure the on-off gear, connect any two of the two meter rods, press the foot switch to make it on, and release it to make it off.

An AC contactor must be used, and the normally open two ends of the foot switch are connected in series in the AC contactor coil control loop.