How does the Spring-Loaded Automatic Single Phase Motor Centrifugal Switch work?

The Spring-Loaded Automatic Single Phase Motor Centrifugal Switch is a key device that controls the start and stop of a single-phase motor through centrifugal force. Its working principle is based on the motion characteristics of the motor rotor and the change of centrifugal force. When the motor is running, the rotor rotates at high speed, generating centrifugal force, which causes the spring in the switch to expand or contract, thereby controlling the state of the switch.

When the motor starts, the rotor begins to rotate and the centrifugal force gradually increases. At this time, the spring in the spring-loaded centrifugal switch is compressed or stretched by the centrifugal force, causing the switch contacts to close and the motor to start running. Once the motor reaches the set operating speed, the centrifugal force reaches a certain level, the spring is completely compressed or stretched, and the switch remains in the closed state.

When the motor stops running, the rotor speed slows down and the centrifugal force decreases. At this time, the spring gradually returns to its original state, causing the switch contacts to open and the motor to stop running. This process realizes the automatic start and stop of the motor without external intervention.

Spring-Loaded Automatic Single Phase Motor Centrifugal Switch is widely used in various single-phase motor driven equipment, such as household air conditioners, washing machines, small pumps, etc., due to its simple and effective design. Its working principle ensures the accuracy and reliability of equipment start and stop, while improving the energy efficiency and service life of the equipment.