【Function】: This voltage protector instantly cuts off power in case of overvoltage, undervoltage, or overcurrent, safeguarding your electrical equipment from damage. Once the line voltage returns to normal, the protector automatically resets. 【Usage】: Designed for DIN rail installation, this protector offers overvoltage and undervoltage protection, ideal for users or loads with single-phase AC voltage of 230V, 50/60Hz, and a rated working current of 63A or lower. 【Parameters】: Available in 40A and 63A specifications. Power consumption: ≤2W. Electrical and mechanical life ≥4000 cycles. Low power consumption and long mechanical life. Size: approx. 81 x 36 x 60 mm / 3.2 x 1.4 x 2.4 inches. 【Application】: Overvoltage protection action time: 0.1s-10s (default 0.1s). Primarily used for overvoltage, undervoltage, or overcurrent protection of distribution lines in residential household boxes or protection of single-phase electrical equipment. 【Safety】: Note the maximum protection current value. The neutral line N is directly connected, with no disconnection function. If the undervoltage breaking time exceeds 0.3 seconds, the protector will not open after a power failure. Rated Voltage: 230VAC 50/60Hz Rated Current: 1-63A adjustable (default 63A) / 1-40A adjustable (default 40A) Overvoltage Protection: 221V-300V-OFF adjustable (default 280V) Undervoltage Protection: 219V-150V-OFF adjustable (default 160V) Protection Action Time: 0.1 sec - 10 sec (default 0.1 sec) Overcurrent Adjustment: 1-63A (default 63A) / 1-40A (default 40A) Overcurrent Action: 0.1 sec - 512 sec (default 5.0 sec) Power Consumption: ≤2W Electromechanical Life: ≥4000 cycles Mounting: DIN Rail Operating Environment: Temperature: -25⁰C to +40⁰C; Humidity <90%; Altitude: up to 2000m