Preventing misoperation: Where sudden transient or temporary overvoltage occurs in the line, the protector will not generate misoperation; when the line suffers instable voltage or sudden power recovery after sudden power disruption due to loose contact or other fault, the protector will not close the circuit; 

Reliable operation: Protection is characterized by inverse time lag operation with operating time≤1s; 

Wide scope of voltage protection: 0~450V; in case of maximum fault voltage upon line fault, the protector itself will not be damaged; 

Safer, impulse withstand voltage: 4kV (conforming to the safety standard of category Ⅲ electrical apparatus); 

Condition indication: The protector has the LED to indicate the operating state, where green is normal voltage indication, and red is overvoltage or undervoltage indication; 

External modular design, guiderail DIN rail mounting.