TC20422402DH

TC20422402DH application field and working principle

The TC20422402DH thyristor module is an industrial-grade SCR (Silicon Controlled Rectifier) designed for use in inductive and resistive loads, motor control equipment, braking systems and soft starter motors. It is able to turn on, switch off and regulate AC voltage and current by constantly measured externally. The module is also capable of withstanding surge voltage.

Features

The TC20422402DH is a small, single-sided SCR module utilizing an internal silicone base for overcurrent protection. It has built-in protection circuitry for overvoltage and undervoltage, reverse polarity and overcurrent. The module has excellent overload characteristics, adjustable on-off times, and short-circuit protection. The TC20422402DH also features a trip indicator, adjustable current and voltage ratings, and active input, output, and/or capacitance. Additionally, it is suitable for all types of motor control applications, including adjustable speed applications.

Applications

The TC20422402DH can be used in a wide array of applications as a versatile motor control module for industrial/commercial use, including motor start/stop, variable speed control, phased-angle and line-start voltage control, AC switching, and DC motor control. It can be used in all types of load control applications, such as fans, pumps, compressors, saws and other heavy machinery. It can also be used in control and soft start applications.

Working Principle

SCRs or Thyristors are a semiconductor technology that allows for switch-like operations with the flexibility of continuous control. The working principle of the TC20422402DH is fairly straightforward and requires only a few components to be able to function properly.

The Thyristor is composed of four layer p-n-n-p structure where two “control” terminals (gate and cathode) are applied to trigger it. When current is passed through the anode and gate terminals, the Thyristor is turned on and begins to conduct. The TC20422402DH also offers reverse blocking action when the current flow is reversed. In addition, the module can be controlled manually, by a switch, or by a timer.

The TC20422402DH uses an internal Silicon base to limit the maximum current and power allowed through the device. This protection is necessary to protect the module from over-voltages, over-currents, reverse-polarities, and short-circuits. This module is suitable for all kinds of motor control applications, including adjustable speed applications.

Conclusion

The TC20422402DH is an industrial-grade SCR or Thyristor module that is especially useful in applications requiring constant current, over-current, and over-voltage protection. It can be applied in a variety of motor control applications, including motor start/stop, variable speed control, phased-angle and line-start voltage control, AC switching, and DC motor control. The adjustable current and voltage ratings, along with the reverse-blocking protection make this module highly reliable for its purpose.