R21-4-14.0A-R102CV-S-V

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A circuit breaker is a type of electrical switch that is designed to detect overloads and short-circuits in an electrical circuit. This type of breaker provides a safe and effective method of preventing downtime and potential fire hazards while keeping electricity usage to a minimum. It is important to understand the application field and working principle of a specific type of circuit breaker in order to properly install and maintain it. One example is the R21-4-14.0A-R102CV-S-V circuit breaker.

The R21-4-14.0A-R102CV-S-V is a four-pole, thermally-activated circuit breaker. It is designed for use in 277/480VAC three-phase applications and meets UL 1077 standard requirements. It features an adjustable trip current rating of 14A and a rated short circuit interrupting rating of 10 kAIC. This breaker has built-in protection against overvoltage, undervoltage, and short-circuit conditions. Its terminals are rated for a minimum of 1.2mm2 conductors and 2.5mm2 for power circuit conductors. Its design allows for easy installation, removing the need for a separate junction box.

The working principle of the R21-4-14.0A-R102CV-S-V circuit breaker is relatively simple. When an overcurrent or short-circuit condition occurs, the breaker trips and interrupts the circuit. This breaks the flow of electricity and prevents damage to the connected equipment. The thermally-activated nature of the breaker means that it is temperature-sensitive and will trip if the temperature inside the breaker rises above a certain level. A red button is provided on the front of the breaker which can be pressed to reset the breaker. This is a crucial safety feature, as it ensures that the breaker will only be reset after the problem has been corrected.

In conclusion, the R21-4-14.0A-R102CV-S-V circuit breaker is a thermally-activated switch designed for use in 277/480VAC three-phase applications and meets UL 1077 standard requirements. It offers protection against common overvoltage, undervoltage, and short-circuit conditions and is easy to install and reset. Understanding the application field and working principle of a circuit breaker is important for anyone installing and maintaining such a device, as it ensures that it is used in the correct manner.

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