203-114-7852-1

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Circuit Breakers

A circuit breaker, or CB, is an electrical device designed to protect electrical circuits from damage caused by overcurrent, short circuits, and other faults. It works by automatically detecting an overload and interrupting the electrical flow. This prevents the circuit from becoming damaged or overheated. Circuit breakers come in two basic types: thermal and magnetic.

203-114-7852-1 Application Field and Working Principle

The 203-114-7852-1 is a medium voltage air-magnetic circuit-breaker used primarily in power distribution systems. It is designed to protect circuits in commercial, industrial, and residential applications from short circuits, thermal overload, and other electrical faults. It is also used to apply or remove power to control circuits.

The 203-114-7852-1 circuit breaker is equipped with an air-magnetic operating mechanism and arc extinction system. The air-magnetic mechanism is made up of a combination of permanent magnets, electromagnets, and air-cores. When the circuit is closed, the contact armature is drawn by the magnets to complete the electrical path. But when an overcurrent condition is detected, the current flow causes a sudden movement of the contact armature. This movement is counteracted by the air-core, which provides the necessary interruption force, and the circuit is suddenly broken.

The arc extinction system of the 203-114-7852-1 is based on the standard arc extinction principles. When the contact armature breaks the current path, an electrical arc is created. This arc is quickly extinguished by an arc blast that directs the arc into the inner chamber of the breaker. The chamber is designed to dissipate the arc energy quickly and safely.

The 203-114-7852-1 can also be used as a control device. It is equipped with a selector switch and can be used to 3-phase switch the power supply. The switch provides 4 positions - ON, OFF, DELAY, and TEST. The DELAY setting allows the current flow to be interrupted gradually, while the TEST setting can be used to check the functional integrity of the breaker.

The 203-114-7852-1 is designed to meet the IEC 60898-1 and GB/T19865-2 standards and is approved for use in power systems up to 24 kV. It is also designed for long life operation and easy maintenance.

In summary, the 203-114-7852-1 is a versatile, high-performance air-magnetic circuit breaker designed for use in medium voltage power distribution systems. It is designed to provide a reliable, cost-effective, and efficient protection for circuits against overcurrent faults and incidents, and also to provide switching and control capabilities for a wide range of applications.

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