How to choose the circuit breaker in the lighting electrical ready board?

When selecting circuit breakers for lighting electrical ready boards, multiple factors need to be considered to ensure the safety and stability of the circuit. Here are some key selection points:

Type selection:

Lighting circuits usually use 1P or 1P+N circuit breakers. A 1P circuit breaker is suitable for single pole circuits, while a 1P+N circuit breaker simultaneously protects the phase and neutral lines, but the neutral line does not have protection and is only isolated. In lighting electrical ready boards, 1P+N circuit breakers are more commonly used because they facilitate fault diagnosis and prevent false tripping.

Rated current:

The rated current of the circuit breaker should be determined based on the load current of the lighting circuit. Usually, the rated current of the circuit breaker in the lighting circuit is selected to be slightly higher than the maximum load current of the circuit to ensure that it will not trip during normal operation and can timely cut off the circuit in case of overload.

Leakage protection:

According to national regulations, lighting circuits should be equipped with leakage protection devices. This helps to promptly cut off the circuit in the event of a leakage fault, preventing electric shock accidents and electrical fires.

Brand and Quality:

Choose well-known brand circuit breakers to ensure product quality and reliability. At the same time, attention should be paid to checking the certification mark and testing report of the product to ensure that it complies with relevant standards and specifications.

Current limiting capability:

The current limiting capability of circuit breakers is also an important consideration factor. The higher the current limiting level, the circuit breaker can minimize the thermal effects of cables and fault points when a short circuit occurs, thereby improving the safety of the electrical system.

In summary, when selecting circuit breakers for lighting electrical ready boards, factors such as type, rated current, leakage protection, brand and quality, and current limiting capacity should be comprehensively considered. By making reasonable choices, the safety and stability of the lighting electrical ready board can be ensured.