Feature: 1. SILVER CONTACTS IMPROVE CONDUCTIVITY: The use of silver contacts in this product can greatly improve the conductivity and service life of the product 2. CONVENIENT OBSERVATION: Built in timing standby open signal output port, which can be connected to a signal indicator light, convenient for observation outside the cabinet, rail type installation design 3. FLAME RETARDANT MATERIALS: Made of good quality flame retardant plastic materials, possess good insulation, high temperature resistant, aging resistant, safe and reliable 4. MILLISECONDS SWITCHING WITHOUT INTERRUPTION: When the normal power supply is abnormal, the backup power supply works immediately, and the power supply is switched in milliseconds without interruption, which ensures the continuity, reliability and safety of the power supply 5. FOR VARIOUS PLACES: Switch to the backup power supply when there is a power failure, and switch to the main power supply when power recovery. Widely used in various places where continuous power failure is not allowed, like factories, shopping malls, nurseries, etc. Specification: Item Type: Dual Power Automatic Transfer Switch Product Model: NLQ4-125/4P Switch Type: Secondary power distribution Rated Current: 100A Rated Voltage: 400V AC Insulation Voltage: 690V AC Rated Frequency: 50Hz/60Hz Electrical Grade: PC grade isolation type Service Life: Electrical: 2000 Times; Mechanical: 5000 Times Rated Short Circuit Current: 50kA SCPD (fuse): RT16-00-63A Rated Impulse Withstand Voltage: 8kV Control Circuit: Rated Control Voltage Us: AC220 V 50Hz Normal Working Condition: 85% Us-110% Us Auxiliary Circuit: 2 Independent relays, each relay includes 2 sets of transformer contacts Contact Capacity: AC220V 50Hz Touch Time: