1Z20UL

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Circuit Breakers

A Circuit Breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Circuit Breakers provide a wide range of protective services intended to provide enhanced safety features in both motors, equipment and systems causes by short-circuits, overloads and ground faults.

1Z20UL is an oil-filled circuit breaker developed by ABB. It is designed to provide outstanding performance and exceptional protection in medium voltage applications. It is commonly used for powering electric utilities and public works applications. 1Z20UL has inserted phase and ground protection, which can prevent power outages and overall losses of electrical grid.

The 1Z20UL application includes a variety of medium voltage applications including: distributed energy sources, utility substations, industrial plants and power generation & distribution. It provides a complete set of protection from overloads, short circuits, ground faults, tap changes and network disturbances. 1Z20UL also offers long-term reliability and reduced maintenance costs.

The working principle of 1Z20UL is based on the principle of an over current circuit interrupting device. It is designed to automatically disconnect an electrical circuit when it detects an overload or short circuit. When the preset value of current is exceeded, the breaker trips, disconnecting the circuit. Then, it can be reset to restore the electricity supply.

There are several advantages to using 1Z20UL. It has a high short circuit interrupting capability and can be easily set in different current ratings. It also has high dynamic breaking capability with low operating temperature, offering enhanced reliability and performance. This makes 1Z20UL the ideal choice for medium voltage applications.

In conclusion, the 1Z20UL is a reliable and cost-effective choice for a wide range of medium voltage applications. It is designed to protect against possible damage caused by overloads and short circuits, offering long-term reliability and improved performance. The 1Z20UL is easy to install and does not require a large investment in terms of manpower or equipment.

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