4430.3295 Circuit Protection

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Circuit breakers are used to protect electrical systems from damage caused by current surges by automatically disconnecting the power in certain dangerous situations. The 4430.3295 is a type of circuit breaker that applies a unique current sensitive protective device. This article will explain the application field and working principle of the 4430.3295.

The 4430.3295 is a special type of fault current limiter designed to protect industrial and commercial electrical systems from short circuit damage. It is mainly used in medium voltage applications such as distribution and transmission lines, power transformers, hospitals, factories, offices, power plants and other infrastructure facilities. These circuit breakers provide fast and reliable protection from overcurrents up to 2000A.

The 4430.3295 is electrically operated as it is connected directly to the electrical system and does not require a power source for its operation. The 4430.3295 has two main parts, the contactor unit which is located on the side of the main equipment and the protection unit which is separate from the contactor unit. The contactor unit contains two power contactors connected in series; one contactor is provided with a fuse and the other contactor is used to release the energy stored in the fuse when the fault current exceeds its setting. The protection unit is equipped with the detection and release circuits that are activated when a fault current is sensed.

The 4430.3295 uses a current sensing device to detect fault currents. When a fault current is detected, the unit will open the contactor and release the energy stored in the fuse, disconnecting the load from the power supply. The unit also features a built-in delayed protection and control circuit, with a response time of up to 1.5 ms, providing fast and reliable protection. The contactor and protection unit can be integrated into the main power equipment or be mounted on the side for easy access and maintenance.

In conclusion, the 4430.3295 is a special type of fault current limiter designed to protect industrial and commercial electrical systems from short circuit damage. It is mainly used in medium voltage applications such as distribution and transmission lines, power transformers, hospitals, factories, offices, power plants and other infrastructure facilities. The 4430.3295 uses a current sensing device to detect fault currents and can be integrated into the main power equipment or mounted on the side for easy access and maintenance. This article has explained the application field and working principle of the 4430.3295.

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