8345-F01A-S3M0-DB1B4B-45A-V Circuit Protection

Circuit breakers are among the most essential safety devices in the electric power system. 8345-F01A-S3M0-DB1B4B-45A-V is a kind of circuit breaker. It is designed to protect electrical circuits from overcurrents and short circuits, and to prevent electric shock hazards and fire risks arising from faults or overloads. The following will discuss its application field and working principle.

Application Field

8345-F01A-S3M0-DB1B4B-45A-V is suitable for infrequent operation under the rated voltage of 690V or below AC 50Hz/60Hz power system. It is mainly used for power distribution, overload and short circuit protection of power system and electrical apparatus.

The device can be used as protection, switch and isolation in the following systems: normal power distribution systems, distribution systems with electronic power units, power electronic packages and infrequent frequent operation, which are applicable for engine control, motor control, lighting, building decoration, low voltage testing, special industry control, production lines, distribution systems of power plants.

Working Principle

The working principle of 8345-F01A-S3M0-DB1B4B-45A-V circuit breaker is based on the bimetallic overload protection. When the current passing through the circuit breaker exceeds the rated current (overload protection) or short circuit occurs, the bimetallic strip in the device is heated by Joule effect, and the bimetallic strip quickly deforms to quickly break the circuit, cut off the power supply, and protect the circuit. When the current drops to the rated current, the bimetallic strip slowly returns to its original state, at which time the circuit breaker is restored.

In addition, 8345-F01A-S3M0-DB1B4B-45A-V circuit breaker has a built-in ratchet limiting plate, which ensures that the bimetallic strip can de-energize the circuit when it is heated. In this way, the deterioration of the strip does not affect the release of the circuit action after successive trips.

Conclusion

To summarize, 8345-F01A-S3M0-DB1B4B-45A-V circuit breaker is a reliable and safe device. It is widely used in power systems due to its reliable operation, simple structure and convenient maintenance. Its working principle is mainly based on the bimetallic overload protection, and the built-in ratchet limiting plate ensures the repeatability of trip action.