Overvoltage protection circuit to prevent high voltage. Three sets of common mode filters combined through X2 capacitors and common mode inductors for enhanced noise removal. Effective in reducing rapid transient group pulse interference with a repetition frequency of several thousand hertz. Extends the service life of electrical appliances and increases equipment stability. Rated for single-phase AC input and output voltage of 110-250V, with a load current of 15A-20A. Input voltage: single-phase AC 110-250V Output voltage: single-phase AC 110-250V Rated current of load: 15A -20A Input port: Three wire 7 62 socket input Output port: 3-wire 7 62 socket output Function: overvoltage protection (surge protection) Three sets of common mode and bidirectional EMI filtering to prevent interference Main parts selection: X2 capacitors: Germany Ximen 0.22UF 4PCS Y2 capacitors: 275V 3300PF 4PCS Common mode inductance: 3 PCS Varistor: 2D561K 1PCS Resistance: 1 PCS Socket: 7 62 2PIN, 3PIN, 1 PCS each Circuit board: FR4 double-sided. Color: As Shown Material: PCB Specification: 20A Package Contents: 1*EMI Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.