Views: 90 Author: Site Editor Publish Time: 2016-04-20 Origin: Site
The air pressure switch is installed and used in many people's houses. If you want to buy an air pressure switch, you must know more about the working principle of the air pressure switch, so that the air pressure switch can be better used. Next, Huizhou Greetech will introduce the working principle of the air pressure switch.
Air pressure switch, also known as wind pressure circuit breaker, is a type of circuit breaker. A switch that will automatically open as long as the current in the circuit exceeds the rated current.
When the circuit is overloaded, the overload current can not make the electromagnetic release act, but it can make the heating element generate a certain amount of heat, which causes the bimetal to heat up and bend, and push the lever to disengage the hook from the lock and disconnect the main contact ,cut the power supply.
When the circuit is short-circuited or severely overloaded, the short-circuit current exceeds the instantaneous trip setting current value, and the electromagnetic trip unit generates enough suction to attract the armature and strike the lever, causing the hook to rotate upward around the shaft seat and release the lock Under the action of the reaction spring, the lock buckles the three main contacts and cuts off the power supply.
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