100% brand new and high quality 40A 63A 230V adjustable digital overvoltage current and undervoltage protection device Protector Relay current protection limit Features Wide range of application, stable and reliable quality, automated function for mass production household appliances. Specifications. Rated voltage: 220V; Frequency: 50Hz/60HZ Overcurrent protection: 1A-40A/63A (adjustable) (default: 20A) Undervoltage action shut-off value: 210V-145V (adjustable) (default 160V) Over-voltage action shut-off value: 230V-300V (adjustable) (default) : 280V) Reconnection time (delayed turn-on time): 1s-300s (default: 5s) Real-time current and voltage error: 5% Functions: 1. Under-voltage protection 210V-140V (adjustable) (default: 160V) 2. Over-voltage protection 230V-300V (adjustable) (default 280V) 3. Overcurrent protection 1A-40A/63A (adjustable) (default 20A) 4. Reconnection time (delayed start time): 1s-300s (default: 5s) 5. Voltmeter 6. ammeter Product includes 1 x Voltage protection limit Notes. Due to different monitors and lighting effects, the actual colour of the item may differ slightly from the colour shown in the picture. Thank you Due to manual measurement, please allow for a 1-2 cm measurement variation.