R29-20920-1-V

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Circuit breakers are an important aspect of any electrical system; providing a means to protect wiring from excessive current, prevent fires, and shutdown equipment in the event of an abnormality. The R29-20920-1-V is a commonly used circuit breaker, designed for use in other equipment as well as residential, commercial and industrial applications. In this article, we will examine the R29-20920-1-V’s application field and its working principle.

Application Field

The R29-20920-1-V is a thermal-magnetic circuit breaker, designed for use across all upcoming, off-grid and conventional electrical systems. Its versatile design and wide range of voltage, current and environmental ratings make it suitable use in applications ranging from 120/240V to 277/480V AC. Such applications include residential and commercial properties, HVAC systems, agricultural, energy and industrial systems.

The R29-20920-1-V features built-in protection against short circuit, overload, over-temperature, under voltage, and over voltage occurrences. This helps protect from dangerous conditions that could potentially cause large losses in electrical energy and damage to property, injury or death.

The R29-20920-1-V is a small sized unit, enabling it to be used in compact spaces and free up floor space; perfect for cluttered environments and applications with limited space available. Furthermore, its ease of installation, maintainability and compatibility make it well suited for use in any kind of electrical system.

Working Principle

The R29-20920-1-V circuit breaker relies on both thermal and magnetic operation. It incorporates a single bimetal strip designed to incur slight deformation with an increase in temperature, which acts as a trigger for tripping the breaker. For higher currents, a magnetic field is generated, increasing the pull on the spring latching mechanism embedded in the breaker. This further increases the contact separation and thus tripping of the breaker.

The thermal element depends on an increase in the rate of temperature rise, which can be caused by overloaded operation of the equipment. The high resistance of the bimetal strip increases the current flow, causing the breaker to trip when it reaches the calibrated setting.

The magnetic element of the circuit breaker is triggered when the current flow builds to a point where the force created by Lorentz’s law outperforms the force of the spring. This magnetic field is proportional to the current flow, hence making it easier to detect an abnormal current.

Calibration of the circuit breaker is relatively straight forward. The thermal element is calibrated by adjusting the current setting screw, while the magnetic element is adjusted by varying the adjustment range via potentiometers. This allows for tailored operation of the breaker, dependent upon the environment, anticipated load, and individual requirements.

Conclusion

The R29-20920-1-V circuit breaker is a widely used piece of equipment suitable for use in a variety of applications, from residential to industrial. It features both thermal and magnetic protection for overloads, short circuiting, over-voltages and under-voltages. The breaker is also small in size, meaning it can fit into many tight fits, as well as being extremely easy to install and maintain. When it comes to circuit breakers, the R29-20920-1-V is a great choice.

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