Ask a senior electrical engineer a question: about micro-opening, open circuit and circuit breaker.

Miniature circuit breaker is short for miniature circuit breaker. It is an ordinary open circuit, and the miniature circuit breaker is a switch with overload protection. Pay attention to vertical installation during installation, and do not use it in vibration occasions. Of course, it is also possible to control a 1.5 motor, just use DZ47-63 D 16, and it is better to use a bipolar motor, generally around 18 yuan.

Air switch is a very important electrical appliance in low-voltage distribution network and electric drive system, which integrates control and various protection functions. In addition to contacting and breaking the circuit, it can also protect the circuit or electrical equipment from short circuit, serious overload and undervoltage, and can also be used to start the motor infrequently.

Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the scope of application. The boundary between high voltage and low voltage is vague, and those above 3kV are generally called high voltage appliances. Low-voltage circuit breaker, also known as automatic switch, commonly known as "air switch" also refers to low-voltage circuit breaker. It is an electrical appliance with manual switch function, which can automatically protect against voltage loss, undervoltage, overload and short circuit. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power supply lines and motors, and automatically cut off circuits when they have serious faults such as overload, short circuit and undervoltage. Its function is equivalent to the combination of fuse switch and overheat relay. Moreover, it is generally not necessary to replace parts after breaking the fault current, and it has been widely used.