The principle of the foot switch

The foot switch is a switch that controls the on-off of the circuit by stepping on or stepping on it. It is used in the control circuit that cannot be touched by both hands to replace the hands to achieve the purpose of operation. A simple foot switch is actually a built-in travel switch. When the foot pedal gives a signal, the switch is executed. But in the field of welding, the function of the foot switch also plays the role of controlling the output current.

This type of foot switch can also be divided into two categories: one, mechanical foot switch; two, inductive foot switch. The mechanical foot switch is a traditional rack and pinion drive, and the induction type is based on the principle of electromagnetic induction. Foot switch HRF-M series, HRF-H series has H type (15A/250V opening and closing capacity) and M type (10A/250V opening and closing capacity) in terms of structure and function. Steel plate, aluminum alloy.

There is a micro switch inside the foot switch. The micro switch has two groups of contacts: normally open and normally closed. When the foot pedal is pressed down to touch the micro switch, the normally open contact is closed and the normally closed contact is disconnected. The general application is to wire normally open contacts and use them as foot switches.


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Post time: Aug-04-2022