2D5UL

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Circuit breakers are devices that protect electrical circuits from overloading. They sense changes in the current, voltage or power flow in an electrical circuit and when this occurs, they create an interruption or interruption of electrical power. When triggered, they open the flow of the circuit and can sometimes be reset the same way they were opened. With the introduction of modern technologies, new circuit breakers called 2D5UL have emerged.

2D5UL circuit breakers are intended for use in medium voltage switchgear, such as outdoor switching centers, generator systems, motor system starters and other similar applications involving switchgear for medium voltage electrical circuits. They are rated for a maximum voltage of 15KV, a continuous current rating of up to 40 amps and a maximum surge current rating of 200 amps. 2D5UL circuit breakers employ an integral arc chute which lowers the arc extinguishing time and is engineered to reduce the effects of electrical arc flash. This arc chute, combined with the integrated electro-mechanical mechanism, allows for improved system performance and reliability.

2D5UL circuit breakers also use a combined overcurrent and over-temperature protection system. This system combines a current transformer and a thermal switch to provide protection against both overcurrents and high temperatures in the circuit. The current transformer monitors the current flowing in the circuit, while the thermal switch detects temperature changes in the circuit. When either overload or high temperature is detected, the corresponding protective function is activated, interrupting the circuit.

The working principle of 2D5UL circuit breakers includes features such as a current transformer, thermal switch, and a vacuum-interrupter. The current transformer, also known as current transformer (CT), measures the current and is connected to the circuit’s main circuit breaker. The thermal switch connects to the CT and checks for over-temperature in the circuit. When either overload or high temperature is detected, the thermal switch initiates the corresponding action, interrupting the circuit. The vacuum interrupter is the last element to complete the working principle. This element is triggered automatically in response to an excessive current, completing the circuit-breaking action.

The main applications of 2D5UL circuit breakers include the protection of commercial and industrial buildings, such as hotels, restaurants, office buildings, and warehouses. They are also suitable for outdoor applications, ensuring a safe and reliable distribution of power to outdoor equipment, such as air conditioning systems, motors, lighting controls, and pumps. The 2D5UL circuit breakers can also be used in power generation systems, such as nuclear power, hydroelectric power and wind power.

In summary, 2D5UL circuit breakers are medium voltage circuit breakers featuring an integrated arc chute and combined overcurrent and over-temperature protection system. They are suitable for a range of applications and ensure safe and reliable distribution of power for commercial and industrial buildings, outdoor equipment and power generation systems. They provide a high degree of reliability and are designed for long-term performance.

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