UPL1-1REC4-1643-350 Circuit Protection

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Circuit breakers are important components in the electrical system. They are designed to protect circuits from overloads and other kinds of overcurrent incidents. There are many different types of circuit breakers available in the market such as thermal-magnetic, electronic, and UPL1-1REC4-1643-350. In this article, we cover the application field and working principle of the UPL1-1REC4-1643-350.

Application Field

The UPL1-1REC4-1643-350 is a three-pole circuit breaker with an electric power rating of 421A and a frequency rating of 50/60 Hz. It is mainly used in residential and commercial applications. This circuit breaker is ideal for use in electrical systems with a range of loads, including those that are subject to frequent overcurrent conditions. It is also a suitable option for industrial installations since it is designed to provide reliable protection and maximum safety. It is commonly used in overcurrent protection applications in motor circuits, heating systems, air conditioners, and other circuits with large capacity loads.

Working Principle

The UPL1-1REC4-1643-350 operates on the principle of thermal-magnetic response. This means that when the current exceeds the permissible limit, or when an overload or short circuit occurs, the device responds with both a thermal and a magnetic response. It utilizes a bi-metal strip which is heated by the current, causing it to bend and trigger the thermal response. The thermal response trips the circuit breaker, cutting off the current flow. Simultaneously, a magnet is activated, which generates a magnetic response that trips the circuit breaker. In the case of short circuits, the current is limited by the magnetic response.

The circuit breaker is equipped with adjustable overcurrent protection and a visual indication that shows the status of the circuit breaker. When an overcurrent condition is detected, the device responds by opening the circuit and automatically resetting itself when the current returns to normal. It also provides adjustable controlled resetting so that the device can be reset without having to manually intervene.

The UPL1-1REC4-1643-350 is one of the most reliable circuit breakers available in the market. It is highly resistant to shock and vibration and maintains its functionality in temperatures up to 85°C. It is also resistant to corrosion, making it an ideal option for harsh environments.

Conclusion

The UPL1-1REC4-1643-350 is a three-pole circuit breaker that offers reliable protection against overcurrents and short circuits. It utilizes the principle of thermal-magnetic response, which allows it to trip rapidly and reset itself without having to intervene manually. It is suitable for use in residential, commercial, and industrial applications with a range of loads and is highly resistant to shock and vibration.

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