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Tech: What are the Input Quantity And Output Quantity of circuit breaker?

I. Definition of the input and output of the circuit breaker

A circuit breaker is an electrical component that plays a protective role in the circuit. When there is an overcurrent or overload in the circuit, the circuit breaker will automatically cut off the circuit to protect electrical equipment and personal safety. The input and output quantity of the circuit breaker refer to the current and voltage required when the circuit breaker is started.

The input quantity is the current required when the circuit breaker is started, which is generally used to calculate the thermal stability of the circuit breaker. The output quantity refers to the voltage required to cut off the circuit when the circuit breaker is working. The size of the output quantity depends on the arc characteristics of the circuit breaker and the electrical design inside the circuit breaker.

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II. Calculation method of the input and output of the circuit breaker

The input and output of the circuit breaker need to be calculated according to the specific circuit parameters. Normally, the calculation method of the input and output is as follows:

1. Calculation method of input

The calculation method of the input is based on the rated current and overload factor of the circuit breaker. Generally, the overload factor of the circuit breaker is 1.2 times, that is, the circuit breaker can work normally under the condition of 1.2 times the rated current.

Input = rated current of the circuit breaker × 1.2

2. Calculation method of output

The calculation method of the output needs to be calculated based on the rated voltage and arc characteristics of the circuit breaker. Generally, the rated voltage of the circuit breaker is 400V and the arc characteristic is AC6b.

Output = rated voltage of the circuit breaker × arc characteristic coefficient

III. The role of the input and output of the circuit breaker in circuit protection

The input and output of the circuit breaker are very important parameters in the design of the circuit breaker, which directly affect the working performance and protection of the circuit breaker. In circuit protection, the functions of the input and output of the circuit breaker are as follows:

1. Protect electrical equipment

The circuit breaker can protect electrical equipment by cutting off the circuit to prevent damage to the electrical equipment due to overcurrent or overload.

2. Protect personal safety

The protective function of the circuit breaker is not limited to electrical equipment, it can also protect personal safety. When there is overcurrent or overload in the circuit, the circuit breaker will automatically cut off the circuit to avoid electric shock accidents.

3. Improve the reliability of the circuit

By setting appropriate input and output, the reliability of the circuit can be improved, and problems such as power outages and equipment damage caused by circuit failures can be avoided.

In short, the input and output of the circuit breaker are very important parameters in the design of the circuit breaker, and play a vital role in circuit protection. By understanding and mastering the calculation methods and functions of these parameters, we can better understand the working principle of the circuit breaker, so as to better protect electrical equipment and personal safety.