UTC-300P-B31E

UTC-300P-B31E are among the most widely used components in industrial, electronics, aerospace and telecommunications fields. They are used for a variety of applications, including circuit protection, electromagnetic interference suppression, regulation, and surge protection. This article will discuss the application field and working principle of UTC-300P-B31E.

UTC-300P-B31E is suitable for voltage, current, frequency and power protection in power systems, communication systems, electronic circuits and industry equipment, which can effectively prevent damage caused by overvoltage and overcurrent. Typical application fields are flyback switching power supply, robots, elevators, LED lighting, motor control, etc.

The three terminals of UTC-300P-B31E are CL, NC and CT. The terminals are connected respectively to the power supply terminal, load terminal and ground terminal. CL is the common electrode, NC is the normally closed electrode, and CT is the control electrode. The switching time of the circuit breaker is short and precise.

The working principle of UTC-300P-B31E is mainly achieved through a thin film bimetal structure. When the over current or over voltage is detected, due to the different thermoelectric power of the two layers of metal and the thermal expansion of the air gap, the bimetal structure bend outward and cause the switch to open. During the protection process, a snubber is added at the switching end of the bimetal element to reduce the surge current energy, and filtering is also added to suppress the surge voltage, thus increasing the operating performance of the breaker.

The working mode of UTC-300P-B31E is mainly classified into two categories: fixed operating current and fixed operating voltage. In the fixed operating current mode, the protection circuit breaker triggers in the case of overcurrent, while the protection circuit breaker in the fixed operating voltage mode triggers when the voltage exceeds the specified value.

In conclusion, UTC-300P-B31E is a kind of circuit breaker which is widely used on a variety of applications. It works by detecting the overvoltage or overcurrent, and triggering the breaker to disconnect the circuit. This article has discussed the application field and working principle of UTC-300P-B31E.