Frame circuit breaker is an important electrical protection equipment, used to detect and protect electrical equipment from overload, short circuit and other faults in the circuit. Understanding and reading the parameters of the frame circuit breaker is very important for the correct selection and application. This article will analyze the parameters of the frame circuit breaker in detail, and provide the application skills of reading the parameters to help readers better understand and apply the frame circuit breaker.

1. Rated current (Rated Current)

the rated current is the maximum current value that the frame circuit breaker can operate normally, usually in amperes (A). The correct selection of the rated current of the frame circuit breaker is the key to ensure the normal operation of the circuit and the safety of the equipment. When selecting the frame circuit breaker, the appropriate rated current value should be determined according to the circuit load and equipment power requirements.

2. Short-time rated current (Short-time Withstand Current)

the short-time rated current is the maximum current value that the frame circuit breaker can withstand in a short time, usually in amperes (A). The short-time rated current is used to evaluate the carrying capacity of the frame circuit breaker under short-time overload or short-circuit conditions, and is an important parameter to ensure the safe operation of the equipment.

3. Electrical life (Electrical Life)

electrical life refers to the number of switching times that the frame circuit breaker can withstand under normal operating conditions, usually in units of times. Electrical life reflects the service life and reliability of the frame circuit breaker, and is one of the important indicators to evaluate the performance of the frame circuit breaker.

4. Ambient temperature (Ambient Temperature)

ambient temperature refers to the ambient temperature range for the normal operation of the frame circuit breaker, usually in degrees Celsius (°C). The ambient temperature has an important influence on the performance and stability of the frame circuit breaker, and the suitable frame circuit breaker should be selected according to the actual use environment.

5. Fire rating (Fire Resistance)

the fire level refers to the degree of fire that the frame circuit breaker can withstand in the event of a failure, usually expressed as a level. Selecting a frame circuit breaker with a higher fire rating can effectively protect circuits and equipment from fire hazards.

6. Installation method (Mounting Type)

the installation method refers to the installation method of the frame circuit breaker, including plug-in type, fixed type, guide rail installation, etc. Choosing the appropriate installation method according to the actual installation requirements can ensure the stability and safety of the frame circuit breaker.

7. Precautions for use

read to understand frame circuit breaker the following points need to be noted when setting the parameters:

• ensure that the rated current of the frame circuit breaker meets the circuit load requirements and avoid overload use;
• pay attention to the ambient temperature range of the frame circuit breaker to avoid too high or too low temperature affecting performance;
• select the appropriate installation method and fire level according to the actual situation to ensure safety and reliability.

As an important electrical protection equipment, the parameters of the frame circuit breaker are very important to the correct selection and application. By understanding and correctly analyzing the parameters of the frame circuit breaker, the suitable frame circuit breaker can be better selected to ensure the safe operation of the circuit and equipment.