LEGF6-1REC4R-33702-2-V

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Circuit breakers are safety devices used to detect and interrupt electric current. They are designed to protect electric equipment from electrical overload and short circuit damage. The LEGF6-1REC4R-33702-2-V circuit breaker is a modern version of such safety device that offers enhanced protection to metal-clad switchgear installations. This article will discuss the application field and working principle of the LEGF6-1REC4R-33702-2-V circuit breaker.

Application Field

The LEGF6-1REC4R-33702-2-V circuit breaker is designed to be used in high-voltage switchgear systems. It is suitable for use in high-voltage transmission and distribution networks, as well as in industrial and commercial applications. Specifically, it is designed for use in systems with voltages up to 690V AC and 2500V DC.

This particular circuit breaker is suitable for use in power networks where the switching operations are frequent and fast. It can be used to protect the equipment from heavy inrush current peaks that may occur due to the switching of power capacitors, for example. It is also suitable for protecting equipment from external faults, such as lightning surges.

Working Principle

The LEGF6-1REC4R-33702-2-V circuit breaker works by detecting when the electric current exceeds the threshold set by the user. This can be done by monitoring the current through the tripping coils, or by measuring the voltage droop. If the current exceeds the pre-set threshold, a counter-electromotive force (CEMF) will be generated, causing a magnetic field which will cause the armature to move, and the contacts to separate, thus interrupting the current.

In addition to the tripping mechanism, the circuit breaker also includes additional features such as overload and thermal protection, as well as alarm, reset, and control functions. The overload protection is designed to protect the circuit from overloading, whereas the thermal protection prevents the circuit from overheating and causing damage to the components. The alarm will warn the user if any of these protection functions are activated, while the reset and control functions can be used to reset the device or to control the current.

The LEGF6-1REC4R-33702-2-V circuit breaker is a highly reliable and efficient safety device that can be used in a wide range of applications. It offers enhanced protection for the switchgear installations and, when properly installed and maintained, can help to reduce the risk of equipment damage and unexpected shutdowns.

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