4420.0281

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Circuit breakers are used to protect electrical systems, allowing for specific areas of the system to be switched off during an electrical fault. The 4420.0281 circuit breaker from CHTE is a midsized standard rated air circuit breaker designed to protect medium voltage electrical systems in industrial and commercial applications. It provides safety to both personnel and equipment by ensuring proper isolation of the circuit when an electrical fault occurs.

The 4420.0281 circuit breaker is designed to operate in the range of 0.1 to 36 KV AC. It has a maximum continuous current capacity of 2000A, and is particularly suitable for applications in medium-voltage distribution systems up to 32 KV.

To ensure correct operation, the 4420.0281 circuit breaker is provided with a motorized drive unit and an integrated contact system. The contact system includes a main contact, an auxiliary contact, and an operating shaft. The main contact consists of two plates that move when the circuit breaker is switched on or off. The auxiliary contact, which is connected to an external monitoring system, or an emergency power off switch, can be used to signal that the main contact has operated, or to control the activation/deactivation of the circuit breaker from an external source.

When the 4420.0281 is switched on, the motorized drive unit provides movement of the main contact. This creates an electrical connection, allowing power to flow through the circuit. If the sensed current falls outside normal operating parameters, or an internal fault occurs, the motorized drive unit will initiate an actuation signal to the operating shaft, which disengages the main contact, instantly disconnecting the power circuit and protecting the system from further damage.

The 4420.0281 circuit breaker is designed to provide reliable and safety operation in a wide range of applications, including motor control and protection, electrical distribution systems, and equipment control. It is a cost-effective solution for medium voltage systems, and is fully compliant with IEC and UL standards. Furthermore, it is backed by the CHTE product warranty, to provide peace of mind for those choosing this product for their protective needs.

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