IULPK21-1REC4-70035-150

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Circuit Breakers

A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. The IULPK21-1REC4-70035-150 circuit breaker is mainly used in the aviation and aerospace industries. It has a protection level of 125A, a nominal voltage of 500V AC, and a rated current of 125A.

Application Field and Working Principle

The IULPK21-1REC4-70035-150 circuit breaker is primarily used in the aviation and aerospace industries as a safety device. It is designed to protect power switching circuits and components from overcurrents caused by faults or short circuits. In other words, the circuit breaker is designed to turn off the power to the circuit if it detects abnormally high current in the system. This helps protect the circuit from damage due to overheating.

The working principle of the IULPK21-1REC4-70035-150 circuit breaker is based on several key components. It has a contact unit, which is composed of two movable metal contact points that are moved between open and close positions. According to the current flowing in the system, the contact points will be moved from an open position to a closed position when the current exceeds the rated current. If the overload continues, the contact points will remain closed until the circuit is shut off, preventing any further damage from being done to the system.

The IULPK21-1REC4-70035-150 circuit breaker also includes a thermal protection device, which works in conjunction with the contact unit to provide additional protection against overheating. The carrier unit contains a thermal element, which is connected to the contact points. The thermal element is designed to detect any excessive current flowing through the system. If the current exceeds the rated current, the thermal element will heat up, and this will cause the contact points to open, thereby shutting off the power to the circuit. This helps to ensure that the system is protected from any potential damage due to overheating.

In addition, the circuit breaker includes a manual reset button. If the circuit breaker trips, the manual reset button will have to be pushed in order to reset the circuit breaker and then restore the power to the circuit. This helps to ensure that the system is not damaged by an overload.

The IULPK21-1REC4-70035-150 circuit breaker is an effective device for protecting systems from damage due to overcurrents and short circuits. It is reliable and robust, making it an ideal choice for protecting power switching circuits in the aviation and aerospace industries.

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