SUP303 Profibus-DP Transient Suppressor and Anti-Surge
The SUP303 has advanced technology for protection in three stages. Its advanced components work in peaks of high voltage and short duration, high current, high voltage, low impedance with fast response and effective protection against ESD and EMI. The SUP303 circuits were developed to provide effective and coordinate protection in reaction to a transitory at the Profibus-DP port. The primary stage protects from the exposition to an excess of transitory voltage, at a lower level. When the current transient exceeds the trigger limit, the second stage responds in microseconds,thus limiting the current. The third stage keeps the voltage within the Profibus-DP drive limits.