Feature:1. Millisecond switching: The automatic dual power switch can be operated automatically or manually, millisecond switching without power, compact design. 2. Excellent insulation: The dual power automatic power switch features reliable transmission, excellent insulation, easy installation and maintenance, and longer service life. 3. Operating process: When the normal power supply is malfunctioning, the backup power supply works immediately to ensure the continuity, reliability and safety of the power supply and achieve the effect of uninterrupted power supply. 4. PC and silver kontakt: Excellent, fireproof PC material, high temperature resistant, anti-aging, safe and reliable, using silver kontakt, good conductivity. 5. Application scenario: Automatic power switch is widely used in various situations where continuous power failure is unacceptable, e.g. in homes, shopping malls, factories, laboratories, farms, etc. . 4P Automatic Transfer Switch with Dual . 4P Automatic Transfer Switch with Dual Specification: Item Type: Automatic Dual Power Transfer Switch Model: NLQ4 125 4P Material: PC, silver Rated frequency: 50 Hz 60 Hz Insulation Voltage: AC690V 50HZ Rated Voltage: AC400V 50HZ Specification: 4P Electrical life: 2000 times Mechanical life: 5000 times Rated short-circuit current: 50 kA Fuse: RT16 00 63A Rated pulse withstand voltage: 8 kV Control circuit: Rated control voltage Us: AC220V 85% Us-110% Us Auxiliary circuit: Two relays, each relay ma two sets of contact capacities: AC220V50HZ le 5y Touch Time: Operation Conversion Time: Return Time: Closing Time: Application: Switch to standby power in case of power failure, switch to main power in case of connection . 4P Automatic Transfer Switch with Dual . 4P Automatic Transfer Switch with Dual Package List:1 x Automatic Dual Power Transfer Switch 1 x User Manual . 4P Automatic Transfer Switch with Dual . 4P Automatic Transfer Switch with Dual