Feature: 1. LCD display supports clear screen introduction, which can make real-time display to voltage and current. 2. It has 4 status indicators including power indicator, overvoltage indicator, undervoltage indicator and overcurrent indicator. 3. Setting button can adjust the value of limit voltage and current, which can work in high efficiency. 4. For intelligent chip control, once the line is under voltage or over current, it will automatically cut off quickly with high recognition and no accidental disconnection. 5. After the voltage returns to normal, it will automatically reset and power on after 0.5S-5S, which is reliable and worry free. 6. Adjustable over / under voltage and current values, the voltage protector supports flexible adjustment and easy management. 7. In 2P size, supporting 35MM standard rail installation, such current protector can be installed side by side with circuit breaker. 8. The shell is made of ABS flame retardant material, which has high strength and strong impact resistance, anti- aging for long service life. Specification: Item Type: Voltage Protector Product Model: BEMS5-40A Working Voltage: 230V Working Frequency: 50 / 60Hz Current Size: 40A Overvoltage Adjustable Range: AC230V-300V Undervoltage Adjustable Range: AC160V-210V Overcurrent Adjustable Range: 1A-40A self-setting Reset Adjustable Time Range: 1 second-90 seconds Delay Reset Time: 0.5S-5S Self Power Consumption: ≤2W Prompt Method: LCD Wiring Method: Bottom-in and top-out Product Dimensions: Approx. 85 x 50 x 37mm / 3.35 x 1.97 x 1.46in. Package List: 1 x Voltage Protector1 x English Instruction Manual