Features: 1.Pc Shell: Made Of Premium Pc Flame Retardant Plastic Material, With Good Insulation, High Temperature Resistance, Aging Resistance, And Safety. The Use Of Silver Contacts With Terminal Protective Covers Can Greatly Improve The Conductivity And Lifespan Of The Generator Changeover Switch. 2.Two Operating Modes: Dual Power Automatic Transfer Switch Can Be Operated Automatically Or Manually, With Millisecond Switching Without Power Interruption. The Compact Structure Ensures Reliable Transmission And Makes Installation And Maintenance Convenient. Widely Used In Various Situations That Do Not Allow Continuous Power Outages. 3.Millisecond Level Switching: When The Normal Power Supply Encounters An Abnormality, The Backup Power Supply Immediately Starts Working, The Power Transfer Switch Achieves Millisecond Switching To Ensure Continuous, Reliable, And Safe Power Supply. 4.Wide Application: Suitable For Emergency Power Supply Systems With Rated 220V Ac 50 Or 60Hz, Widely Used In Various Places That Do Not Allow Continuous Power Outages, Such As Factories, Shopping Malls, Nurseries, Etc. 5.Continuous, Reliable, And Safe Power Supply: Ensures The Continuity, Reliability, And Safety Of Power Supply By Testing The Normality Of The Main Power Supply Or Backup Power Supply. Specification Item Type: Dual Power Automatic Transfer Switch Mode: Nlq5 100 4P Material: Pc Flame Retardant, Silver Insulation Voltage Ui: Ac690V 50Hz Rated Voltage Ue: Ac400V 50Hz Level: Pc Level Specification: 4P Rated Control Voltage Us: 220Vac 85% To 110% Us Life: Electric: 2000 Times Machinery: 5000 Times Rated Short Circuit Current: 50Ka Fuse: Rt16 00 63A Rated Impulse Withstand Voltage: 8Kv Auxiliary Circuit: 2 Relays, Each With Two Sets Of Contact Capacity?Ac220V50Hz Le=5Y Touch Time: <50Ms Operation Conversion Time: <50Ms Return Time: <50Ms Closing Time: <50Ms