F1857SDK1200 Discrete Semiconductor Products

F1857SDK1200 is a semiconductor module containing two thyristors: SCR and diode. The device is designed to protect motors and industrial equipment from dangerous overcurrents and surges. It is also used in applications such as: motor control, overcurrent protection, dynamic braking and motor start-up.

The F1857SDK1200 module uses two types of thyristors, SCRs and diodes, to protect against overcurrents and surges. SCRs are voltage-controlled semiconductor devices that allow current to flow in only one direction. Diodes, on the other hand, are current-controlled devices that allow current to flow in both directions but with greater current limitation. In combination, the two types of thyristors can provide reliable overcurrent protection.

The working principle of the F1857SDK1200 module is quite simple. It works in conjunction with a current transformer and relay to provide protection for electric motors. When a motor is started or runs, it draws current from the power source. This draws a current through the current transformer, which produces an output signal to trigger the relay. The relay then switches the F1857SDK1200 module into the circuit, allowing it to limit the current.

When the current exceeds a certain limit, the F1857SDK1200 module trips and opens the two thyristors. This cuts off the power supply to the motor, providing protection against overcurrents and surges. The module can be reset manually by pressing the reset button or automatically by the relay.

The F1857SDK1200 is suitable for use in a wide range of applications, including motor control, overcurrent protection, dynamic braking, and motor start-up. Its favorable features include low conduction losses, high-temperature operation, and ease of installation. It is a reliable and cost-effective device that is suitable for a wide range of applications.