1, The principle of foot switch:

The safety foot switch is a switch that controls the circuit by stepping or stepping on the foot, and is used in the control circuit that cannot be touched by the hands to achieve the purpose of operation instead of the hands.

The simple and safe foot switch is actually a built-in travel switch, and When the foot switch signals, the switch is executed. However, the function of the foot switch in the welding field also plays the role of controlling the output current.

2, This type of foot switch can also be divided into two categories: first, mechanical foot switch: mechanical foot switch is a traditional rack and pinion drive; Second, induction type foot switch: induction type is through the principle of electromagnetic induction.

Foot switch HRF-M series, foot switch HRF-H series from the structure and function of h type (15A/250V opening and closing capacity) and m type (10A/250V opening and closing capacity), distinguish the material with flame retardant engineering plastic, steel plate, aluminum alloy.

There is a micro-switch inside the foot switch, the micro-switch has normally open and normally closed 2 groups of contacts, when the foot pedal presses down the micro-switch, the normally open contact is closed, the normally closed contact is disconnected, the general application is in the normally open contact wiring, to use the foot switch.

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