IULNK1-1RS4-36635-90

Circuit Breakers: IULNK1-1RS4-36635-90 application field and working principle

Circuit breakers are electrical protection devices designed to prevent electrical fires and voltage overloads. IULNK1-1RS4-36635-90 is a miniature circuit breaker (MCB) designed to protect circuits in low-voltage (LV) and medium-voltage (MV) electrical systems. It offer protection from short circuits and overloads and can be used as a switch to turn the circuit on and off. In this article, we’ll discuss the application field of the IULNK1-1RS4-36635-90 and its working principle.

Application Field

The IULNK1-1RS4-36635-90 is suitable for use primarily in home and commercial buildings, but it can also be used in industrial settings. It is a single-pole breaker, meaning that it can be used to protect a single-phase circuit. This makes it ideal for smaller residential and light commercial applications, such as lighting circuits and small appliances. It can also be used in larger circuits to provide overcurrent protection for motors, air conditioning units, and other medium-voltage systems.

Working Principle

The IULNK1-1RS4-36635-90 operates on the same basic principle as all circuit breakers. When the current through the circuit exceeds its rated value, the breaker trips, opening the circuit and cutting off the power. This is done by a set of contacts inside the breaker that open when the current exceeds a certain threshold. The contacts are connected to a thermal element and a bimetallic strip that expand and contract when heated and cooled, respectively. When the current is too high, the thermal element rapidly heats up, causing the bimetallic strip to expand and open the contacts, thus inhibiting the flow of current through the circuit.

In addition to the thermal element, the IULNK1-1RS4-36635-90 also has a pressure-sensitive element. This is a small diaphragm connected to a bellows that can detect the pressure of the current flowing through the circuit. If the pressure of the current exceeds a certain level, the bellows will expand and open the contacts, preventing any further current from flowing through the circuit. This ensures that the breaker will trip and stop any further damage from occurring.

The IULNK1-1RS4-36635-90 is also equipped with a manual override switch. This allows the user to manually open and close the contacts without having to trip the breaker. This is useful for testing or resetting the breaker without having to cut off the power. It is important to note that this switch should only be used when the current is low and the circuit is safe to handle.

Conclusion

The IULNK1-1RS4-36635-90 is a miniature circuit breaker designed to provide overcurrent protection in low-voltage and medium-voltage circuits. Its combination of thermal and pressure-sensitive elements give it superior protection and reliability compared to other circuit breakers. It is suitable for a wide range of applications, from residential to industrial, and can be used to protect motors, air conditioning units, and other medium-voltage systems. Its manual override switch provides additional convenience, allowing users to test and reset the breaker without having to cut off the power.