IELBXK111-36947-4-V Circuit Protection

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Circuit breakers are essentially safety devices designed to protect individuals, equipment and systems from hazards such as shorts and overloads. The IELBXK111-36947-4-V application field and working principle specifically relates to the use of this type of equipment in aircraft.

The IELBXK111-36947-4-V circuit breaker is designed for use in military aircraft electrical systems, offering precise and effective overcurrent protection that is compliant with STANAG 4694 in terms of optimal settling time characteristics and current limiting ability. It features a bimetal detection and release system that activates based on temperature rise, an inductive sensing system with proportional release, and an internal arc source design to minimise energy dispersion in the event of failure. Because of its compact size, the IELBXK111-36967-4-V is suitable for installation in the narrow confines of aircraft, allowing it to protect individuals, equipment, and systems from potentially hazardous electrical scenarios.

In terms of working principle, the IELBXK111-36947-4-V is designed to utilise overcurrent protection, i.e. the release of the circuit breaker if the current going through the circuit exceeds the rated current specified for the device. Upon detection of an overcurrent situation, the internal bimetal elementtemperature rises, triggering the release of the circuit breaker. After the circuit breaker is released, the current generating the overload situation is cut off and the system is protected from potential damage.

The inductive sensing system is also used to detect overcurrent situations and activate the circuit breaker. Unlike the bimetal element intended for temperature rise, the inductive sensing system is instead intended to detect current fluctuations; this system senses the current changes caused by sudden increases or decreases in current loading, and releases the circuit breaker based on proportional release characteristics. This allows the IELBXK111-36947-4-V to detect and adapt to various overcurrent conditions that could not be detected by the bimetal element alone.

The internal arc source design works by reducing the amount of energy dissipated in the event of a fault by providing both mechanical and electrical safety. The IELBXK111-36947-4-V ensures the integrity of the system in the presence of fault currents by rapidly attenuating the energy of the arc generated at the point of contact. This minimises the risk of shock danger and other potential hazardous events that can be caused due to the accumulation of energy.

The IELBXK111-36947-4-V is therefore designed for use in aircraft electrical systems, and utilizes overcurrent protection with a combination of bimetal element activation, inductive sensing system activation, and internal arc source design for maximum safety and efficiency. By effectively detecting overcurrent situations and protecting individuals, equipment and systems from potential hazards, the IELBXK111-36947-4-V has demonstrably improved the safety and reliability of aircraft electrical systems.

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