209-2-1-52-1-9-70-H-V Circuit Protection

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Circuit Breakers are used to protect electrical circuits and equipment from damage by overload to prevent overcurrent and short-circuit currents. The 209-2-1-52-1-9-70-H-V is an example of a circuit breaker, and it has a variety of applications and working principles.

Types of Circuit Breakers

Circuit Breakers can be divided into different types, depending on the application and characteristics. Low-voltage AC circuit breakers are the most common type and are used in private households and commercial buildings. For use in medium-voltage applications, such as power networks and industrial systems, medium-voltage breakers are required. In addition, there are also high-voltage circuit breakers, which are mainly used at power substations and DC circuit breakers used in DC systems.

209-2-1-52-1-9-70-H-V Characteristics

The 209-2-1-52-1-9-70-H-V circuit breaker is a low-voltage AC type and has a rating of 120/240V, making it suitable for use in residential and commercial applications. The breaker has a two-pole design with 1-inch trip settings, allowing for greater flexibility when setting the trip level. It has a current rating of 52A, with a maximum rating of 70A. Furthermore, it has a high interrupting capacity of 10kA.

Applications

The 209-2-1-52-1-9-70-H-V breaker is suitable for use in any electrical circuit, from lighting circuits to the AC mains supply. It is commonly used in residential and commercial buildings as an overload protection device. Additionally, it is also suitable for use as a ground fault protection device, as it has a voltage rating of 120/240V and can detect low-level ground faults.

Working Principle

The 209-2-1-52-1-9-70-H-V circuit breaker works according to the thermal-magnetic principle. This means that it has a thermal element that operates when a preset trip level is reached, and a magnetic element which is used to trip the breaker if an instantaneous overload current is detected. When the current reaches the trip level, the thermal element heats up, and when the temperature reaches a certain threshold, the breaker trips. The magnetic element is used to detect if an overcurrent is passed through the breaker, and if it is detected, it trips the breaker immediately, providing protection against dangerous overcurrents.

Conclusion

The 209-2-1-52-1-9-70-H-V circuit breaker is an example of a low-voltage AC type which is suitable for residential and commercial applications. It has a two-pole design, a current rating of 52A, a maximum rating of 70A, and a high interrupting capacity. It works according to the thermal-magnetic principle and can be used as an overload protection device and a ground fault protection device.

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