1G20UM

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Circuit breakers are an integral part of any electrical system, especially in critical applications such as nuclear power plants and other hazardous installations. The 1G20UM is a new type of circuit breaker, developed by Mitsubishi Hitachi Power Systems, that provides enhanced safety and reliability in such environments. This article will explore the application field and working principle of 1G20UM circuit breakers.

1G20UM circuit breakers have a wide range of applications in industrial, commercial, or residential environments. They are used to protect electrical circuits and equipment against overcurrents due to short-circuits or other circuit malfunctions. They are also suitable for applications requiring high-speed operation, as they are self-resetting and automatically close when the fault is cleared. 1G20UM circuit breakers can be used in a variety of configurations, including as part of a motor control center, as a branch-circuit breaker, or even as a main-circuit breaker.

The working principle of 1G20UM circuit breakers is based on the principle of differential-current detection. The device is designed to detect small currents caused by a short-circuit or abnormality and quickly interrupt the supply. It does so by using a differential detection method that measures the difference in current between input and output terminals. The detection threshold is set to be slightly higher than normal and is adjustable depending on the application.

When an overcurrent is detected, the 1G20UM circuit breaker responds by tripping the breaker, which interrupts the power supply. This interrupting action is achieved by breaking the circuit between the input and output terminals, thereby preventing the flow of current in either direction. Additionally, the device can be configured with a disconnect function, allowing it to be isolated from the power supply. This isolation ensures that any faults that may have occurred will not propagate and cause further damage.

In addition to its overcurrent protection capabilities, 1G20UM circuit breakers also provide a range of additional features, such as overload protection, short-circuit protection, and motor protection. For motor protection, the device can detect and trip when the motor is overloaded, preventing the motor from burning out. The device also has the ability to measure power consumption, helping to identify when energy is wasted or when additional energy-saving measures should be put in place. It can also detect voltage imbalances and can be configured to trip when an imbalance occurs, protecting the electrical system from damage.

The 1G20UM circuit breaker is designed to provide an enhanced level of safety in hazardous environments. It offers excellent protection for critical applications, such as in nuclear power plants, where even the slightest error can have disastrous consequences. It can also be safely used in a wide range of residential and commercial environments, due to its versatile feature set and high degree of accuracy.

In summary, the 1G20UM circuit breaker is a reliable and highly effective device, offering an impressive array of features and benefits. Its wide range of applications and sensitivity to overcurrents make it a good choice for any environment, while its high level of protection and versatility make it an ideal choice for hazardous environments. The device is also simple to install and maintain, making it a cost-effective option for any application.

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