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Product Introduction:

TSA-012  Waterproof General Electric Magnetic Limit Switch

The travel switch is used to limit the position or travel of the mechanical movement, so that the moving machinery automatically stops, reverses or automatically moves back and forth according to a certain position or travel.

There are many kinds of travel switches. The commonly used travel switches are button type, single wheel rotary type and double wheel rotary type. The button type and single wheel rotary type travel switches are automatic reset, similar to the button, so they become self reset travel switches. The two wheel rotary travel switch is called non self reset travel switch because the contact is reset after collision with the direction.

The travel switch is used to limit the position or travel of the mechanical movement, so that the moving machinery automatically stops, reverses or automatically moves back and forth according to a certain position or travel.

There are many kinds of travel switches, but the basic structure is the same, which mainly consists of three parts: contact part, operation part and reaction system. According to the different motion characteristics of the operation part, the travel switch can be divided into direct action type, roller type, micro motion type, automatic reset type and non automatic reset type.

(a)  Direct travel switch (b) micro travel switch (c) roller travel switch

In the selection, mainly according to the application and control object. When the speed of mechanical movement is slow and the current in the controlled circuit is large, considering the difficulty of arc breaking, the travel switch with fast action can be used. When there are many loops of the controlled object, and it is not suitable to install the direct acting travel switch on the path of the production machinery travel, the direct acting travel switch can be used

Select master controller type (i.e. camshaft rotation type) travel switch. If the working frequency is very high, it is not suitable to install the friction block on the production machinery, and the reliability and accuracy are also high, the appropriate transistor proximity switch can be considered.

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