Micro Switch Manufacturer
Over 10 Years Experience
Greetech speicalized in production and development micro-switches, toggle switches, limit switches, door switches, slide switches, rotary switches, tact switch and so on a series of electronic products under brandname. Mainly applies all kinds of electronic parts in different fields, such as communication products, portable products, computer peripherals, household electrical appliances, measuring instruments, medical equipments, automotive electronics, audio and video systems, gaming products, smart control system, digital camera, notebook computer and so on.
Micro switch is mechanically operated electrical switch designed with an actuator and terminals called common, normally open and normally closed. The Micro switches that we can offer have been successfully used in Building, Automation and Security, Home Applications.
Rocker switches are the most common forms of switch due to how easy it is to use and its reliability. It is an on-off switch that rocks back and forth like a see-saw. The rocker switch uses in medical systems, household appliances, control panels, power supply units, and HVAC equipment.
Limit switch is a contact proximity sensor device that consists of an actuator mechanically linked to a set of output contacts. Limit switch can also be used as part of a larger control system. When a certain limit is reached, the actuator can de-activate or activate a device to prevent malfunctioning.
Rotary switches are a type of electrical switch operated by rotation. Rotary switches allow the user to turn a knob or shaft that increases or decreases the resistance conducted through the contacts dependant on the direction of turn.
Micro Switch Knowledges
somethings you need to know about micro switch
What is a micro switch?
“Micro switch” is actually a trade name that people use to refer to pressure switches in general, just as people use Kleenex as a general term for tissue. The term “quick action” refers to the instant when the contacts suddenly change state.
Microswitches are widely used for a wide variety of applications. For example, most limit switches are snap-on.
How does a microswitch work?
The main feature of microswitches is the use of an over-center, or inflection point, mechanism to create specific operate (trip) and release (reset) points where the contacts will change state.
Micro switch terminology
An operate or trip point is the point where the contacts change state from their normal unactuated position.
A release or reset point is the point where the switch contacts return to their normal position.
Differential travel refers to the distance between the actuation point and the trip point.
The purpose of separating the operating and release points is to protect the contacts from rapid and unwanted ON / OFF due to vibrations which will reduce the life of the switch.
Overtravel is a built-in safety feature that prevents damage to the circuit breaker by allowing the actuator to move beyond its operating point.
To minimize mechanical stress and damage, you must ensure that the actuator does not exceed the allowable distance for excessive travel.
Advantages of using a microswitch
Unlike other types of switches in which any movement of the actuator will cause the contacts to move, the contacts of a microswitch will not change state until the actuator reaches a trip point. or specific reset over its entire range of motion. .
Fast switching speeds reduce damage from arcs
Switching speed, in electromechanical switches, refers to the speed at which the contacts open and close. High switching rates help extinguish arcs faster, reducing damage to mating surfaces caused by arcs.
The speed and movement of the contacts are independent of the speed and movement of the actuator. Therefore, unless a switch reaches the end of its operational life, contacts can be relied on to change state in a predictable fashion.