LBA120S

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Solid State Relays (SSRs) are the most common type of industrial relay, providing a means to control electrical loads without direct physical contact. The SSR enables a low level signal to be used to switch an electrical load on or off without the use of a mechanical relay. One of the advantages of using an SSR is its long life and reliability. One of the SSR products that is widely used in industrial applications is the LBA120S. This article will discuss the application field and working principle of the LBA120S.

Application Field of the LBA120S

The LBA120S is a DC operated solid state relay suitable for a wide range of industrial applications. It is capable of switching loads between 200V and 300V DC with a maximum current rating of up to 20A. The LBA120S is typically used in applications such as motor control, heating, lighting, and process control. It has a small form factor and a low cost, making it a great solution for various applications.

The LBA120S is also used in applications where reliable and highly accurate performance is required. This SSR is capable of providing rapid switching of a load, making it suitable for applications such as instrument control, panel fan control, and motor speed control.

Working Principle of the LBA120S

The LBA120S is a DC-operated solid state relay that works by using an integrated circuit (IC). This IC consists of a microprocessor-controlled logic circuit that interprets the input signal and changes the output voltage and current in order to control the load.

The LBA120S features a four-terminal connection with a control input voltage ranging from 3V to 32V DC. The logic input is an open collector circuit, which is energized through the control voltage input and holds the circuit in a fixed state. When the logic input is powered, the voltage and current output from the LBA120S is changed to the desired value, thus controlling the load and switching it on or off.

The LBA120S also features a “fail-safe” option, which provides an additional level of safety. In the event of an unexpected power outage, the “fail-safe” will keep the load switched off until power is restored.

Conclusion

The LBA120S is a widely used solid state relay suitable for a variety of industrial applications. Its small form factor and low cost make it the ideal choice for applications such as lighting, process control, and motor control. It works by using an integrated circuit consisting of a microprocessor-controlled logic circuit, enabling rapid switching of the load. The “fail-safe” option provides additional safety for applications that require it.

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