[Automatic Protection Function]: When the power supply is unstable or exceeds the range, the protection function of this 230v 40a voltage protector device will automatically activate to protect the safety of electrical equipment and personnel. [Quick Return to Normal]: When the power returns to normal, this automatic over-under voltage feedback device will power on again in 1 minute. [Indicator Light]: The red light on this voltage feedback device indicates that the power supply is normal; the red light indicates overvoltage or undervoltage. [High-Quality Electronic Components]: The circuit board of this overvoltage and undervoltage protection device uses high-quality electronic components for reliable performance. [High-Quality Electronic Components]: The circuit board of this overvoltage and undervoltage protection device uses high-quality electronic components for reliable performance. Over and Under Voltage Protection Device Voltage Protection Relay Feedback Automatic Over and Under Voltage Voltage Protection Device 230v 40a Voltage Feedback Device **Features:** - The device's over and under voltage protection with automatic reset meets modular design standards. - The product board uses high-quality electronic components for reliable performance. - When the power supply is unstable, its protection function will automatically activate. When the voltage exceeds a product limit range, it will automatically shut off to protect the safety of electrical equipment and personnel. - When the power returns to normal, the device will turn on again within 1 minute. - The green indicator light indicates that the power supply is working correctly. The red light indicates overvoltage or undervoltage. **Specification:** Function: Overvoltage Undervoltage Protection Rated AC Voltage: 230V 50Hz Rated Max Current: 40A Max Power: 8.8KVA Overvoltage Action Cut-off Value: > 270VAC +/- 5V Normal Voltage: 175-270VAC Undervoltage Action Cut-off Value: < 165VAC +/- 5V Overvoltage Undervoltage Cut-off: < 1S Power Transmission Delay After Power Failure: < 60s Power Consumption: < 2W Motor Lifespan: 100,000 times Size: 77 x 35 x 45mm/3.03 x 1.38 x 1.77in Installation: 35mm DIN rail **Package List:** 1 x Protector **Note:** When connecting the product for the first time, you need to wait about 1 minute. Only when the red light goes out can the product work normally.