Welcome to our store! 1、Millisecond Switching: The dual power automatic transfer switch can be operated automatically or manually, millisecond switching without power interruption, compact structure. 2、Excellent Insulation: The dual power automatic transfer switch features reliable transfer, excellent insulation, easy installation and maintenance, and longer service life. 3、Working Process: When the normal power supply is abnormal, the backup power supply will work immediately to ensure the continuity, reliability, and safety of the power supply and to achieve the effect of uninterrupted power supply. 4、PC and Silver Contact: Excellent flame retardant PC material, high temperature resistance, aging resistance, safe and reliable, with silver contact, fine conductivity. 5、Application Scenario: The automatic transfer switch is widely used in various situations where continuous power failure is not allowed, such as homes, shopping malls, factories, laboratories, farms, etc. Item Type: Dual Power Automatic Transfer Switch Model: NLQ4 125 4P Material: PC, silver Rated Frequency: 50Hz 60Hz Insulation Voltage: AC690V 50HZ Rated Voltage: AC400V 50HZ Class: PC Class Specification: 4P Electrical Life: 2000 times Mechanical Life: 5000 times Rated Short Circuit Current: 50kA Fuse: RT16 00 63A Rated Impulse Withstand Voltage: 8kV Control Circuit: Rated Control Voltage Us: AC220V 85% Us-110% Us Auxiliary Circuit: Two relays, each relay has two sets of contact capacity: AC220V50HZ le 5y Touch Time: <50ms Operating Conversion Time: <50ms Reset Time: <50ms Closing Time: <50ms Use: Switch to backup power in case of power failure, switch to main power when power is restored 1 x Dual Power Automatic Transfer Switch 1 x User Manual Satisfaction Guarantee: Customers are our top priority. If you find any problem with the product, please contact the seller immediately. We strive to provide satisfactory customer service.