Industry Dynamic

Principle of Molded Case Circuit Breaker for Electronic Devices

Date:2022-11-26

The key connection points of molded case circuit breakers for electronic devices are manual or electric connection. After the main connection is closed, the free traction mechanism locks the main connection at the connection position. The electromagnetic coil of the overcurrent release and the thermal components of the thermal release are connected in series with the main circuit, and the electromagnetic coil of the undervoltage protection release is connected in parallel with the power supply.

The key connection points of molded case circuit breakers for electronic devices are manual or electric connection. After the main connection is closed, the free traction mechanism locks the main connection at the connection position. The electromagnetic coil of the overcurrent release and the thermal components of the thermal release are connected in series with the main circuit, and the electromagnetic coil of the undervoltage protection release is connected in parallel with the power supply.

In case of short circuit fault or heavy load in the circuit of the molded case circuit breaker of electronic devices, the synchronous motor of the over-current breaker will be sucked, so that the main connector will disconnect the main circuit during the random power outage organization.

When the circuit of the molded case circuit breaker of electronic devices is overloaded, the thermal components of the thermal release are hot and the bimetal is bent, so that the main contact breaks the main circuit when the random disconnection organization is working.

When the working voltage of the molded case circuit breaker circuit of the electronic device is not enough, the synchronous motor of the working voltage release is released, and the random tripping organization is also working, and the main contact opens the main circuit.

Press and hold the power-off button of the sub excitation regulator, the synchronous motor of the breaker of the sub excitation regulator will be attracted, so that the main contact will disconnect the main circuit during the random power-off organization.

Classification of molded case circuit breakers for electronic devices.

The low-voltage circuit breakers are classified according to the arc extinguishing materials. It is a circuit breaker with gas as arc extinguishing material. It is called gas circuit breaker (air leakage switch). The circuit breaker with noble gas as arc extinguishing substance is called noble gas circuit breaker (inert gas power switch), and the circuit breaker with oil as arc extinguishing substance is called oil circuit breaker (oil power switch)

Differences between electronic device molded case circuit breaker and molded case circuit breaker.

Difference: leakage circuit breaker is precisely called leakage protection plastic case circuit breaker. In other words, the key difference is that the function of the molded case circuit breaker improves the leakage maintenance function. Other over-voltage protection, over-current protection, tapping and other functions are the same.