IEL111-21791-1 Circuit Protection

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Circuit Breakers

Circuit breakers are designed to protect electrical systems and networks from overload, short-circuit and any other form of excessive electric current by cutting off the power supply automatically when it senses an electric current above the rated value. The IEL111-21791-1 is one such type of circuit breaker. This article discusses its application field and working principle.

Application Field

The IEL111-21791-1 is most often used in industrial applications, such as circuit protection for large industrial motor-driven equipment, power transformers, UPS systems, DC/AC inverter units, DC charging systems, and in special applications such as solar cell installations, power systems in special environments, etc. It has a rated operation voltage of 500V, which makes it suitable for many industrial environments.

Apart from industrial use, the IEL111-21791-1 can also be used in certain domestic applications, such as the protection of domestic electrical wiring, air conditioners, and other electrical appliances. In general, the IEL111-21791-1 is designed for use in almost any system or network involving the use of electric current.

Working Principle

The IEL111-21791-1 circuit breaker works by automatically switching off the power supply when it senses an electrical current that is greater than the rated value. This trip current is preset and can be adjusted to suit each individual application. When the trip current is reached, this circuit breaker will switch off the power supply, thereby preventing any further damage from occurring.

The circuit breaker also has overload protection, which works by preventing any further damage in case of an overload. This is accomplished by limiting the amount of current that can be drawn from the circuit before the breaker trips. This ensures the safety of the system by preventing any further damage from occurring due to too much current flowing through the circuit.

The circuit breaker also has short-circuit protection, which works by switching off the power supply if a short circuit is detected. This is done by limiting the amount of time that the circuit is allowed to remain in the short-circuit state before the power is cut off. This ensures that any excessive electric current flow is quickly shut off, and that any damage caused by the short circuit is minimized.

Conclusion

The IEL111-21791-1 circuit breaker is a very reliable and efficient circuit breaker that is used in a wide range of applications. It is designed with a rated current of 500V and its trip current can be adjusted to meet each individual application. The circuit breaker also has overload protection and short-circuit protection that ensures the safety of the system by limiting the amount of electric current that can be drawn from the circuit and by switching off the power in the event of a short-circuit.

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