LEGBX66-70042-5-V Circuit Protection

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Circuit breakers are essential components used in electrical systems and have wide application in the industry today. The LEGBX66-70042-5-V is one type of circuit breaker that is often used in various applications. This article shall discuss the application field and working principle of the LEGBX66-70042-5-V circuit breaker.

The LEGBX66-70042-5-V circuit breaker is mostly used in medium and high voltage power distribution networks. This type of circuit breaker is designed for three-phase operation and the voltage rating for the device is up to 5kV. The dynamic and thermal characteristics of the device are also designed with consideration of such applications. The device is equipped with advanced electronic trip protection and noise filtering capabilities to satisfy the requirements of medium and high voltage power networks.

The LEGBX66-70042-5-V circuit breaker is mainly used for overcurrent protection of medium and high voltage networks, as well as for short-circuit and overload protection of power plants and heavy industrial facilities. With advanced electronic trip protection features, the device is able to detect a short-circuit quickly and cut off the current flow immediately to prevent damage caused by an overload or short-circuit.

The working principle of the LEGBX66-70042-5-V circuit breaker is based on the electromechanical principle. The electrical energy generated by the induction of an electromagnetic coil is used to operate the device. The device is composed of three parts, namely an outer shell, an inner frame, and an actuator. The outer shell contains a contact assembly with three contact blades that are connected to an electromagnetic coil. The inner frame consists of an armature, a spring, and an armature stop. When the electrical current exceeds a certain threshold, the electromagnetic coil will generate an induction and drive the armature to operate. This will compress the spring, forcing the contact blades to separate and interrupt the direction of current flow. The device will reset and resumes normal operation once the current flow drops below the given threshold.

In conclusion, the LEGBX66-70042-5-V circuit breaker is mainly used in medium and high voltage power distribution networks for protection against overcurrent, overload and short-circuit faults. The device is based on the electromechanical principle, where an electromagnetic coil is used to drive the actuator and create a break in the current flow. The device is equipped with advanced electronic trip protection capabilities, which makes it highly suitable for the application mentioned.

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