Features: 1.Safe And Flame Retardant: This Automatic Transfer Switch Is Made Of Excellent Flame Retardant Pc Materials, Possess Good Insulation, High Temperature Resistant, Aging Resistant, Safe And Reliable, Use Silver Contacts Can Greatly Improve The Conductivity And Service Life Of The Product 2.2 Operation Modes: Power Transfer Switch Support Automatic Operation Or Manual Operation, Has Compact Structure, Reliable Transmission, Convenient Installation And Maintenance, Long Service Life 3.35Mm Standard Rail Mounting: Dual Power Automatic Switch Is A Miniature Household Power Switch, Which Is Mainly Used To Test Whether The Main Power Supply Or Backup Power Supply Is Normal To Ensure The Continuity, Reliability And Safety Of The Power Supply, Designed For Rail Mounting, Specially For Pz30 Distribution Box 4.Milliseconds Switching: Automatic Transfer Switch Is Very Useful, When The Normal Power Supply Is Abnormal, The Backup Power Supply Works Immediately, And The Power Supply Is Switched In Milliseconds Without Interruption 5.Applicable Scenario: Power Transfer Switch Switch To The Backup Power Supply When There Is A Power Failure, And Switch To The Main Power Supply When Power Recovery, Suitable For 50 Or 60Hz Ac Rated 230V Emergency Power Supply System, 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 Model: Nlq5 100 3P Material: Pc Flame Retardant, Silver Insulation Voltage Ui: Ac690V 50Hz Rated Voltage Ue: Ac400V 50Hz Level: Pc Level Specifications: 3P Rated Control Voltage Us: 220Vac 85%Us-110%Us Life: Electrical: 2000 Times; Mechanical: 5000 Times Rated Short Circuit Current: 50Ka Fuse: Rt16-00-63A Rated Impulse Withstand Voltage: 8Kv Auxiliary Circuit: Two Relays, Each Relay Has Two Sets Of Contacts Capacity: Ac220V50Hz Le=5Y Touch Time: <50Ms Operation Transition Time: <50Ms Return Time: <50Ms Off Time: <50Ms Size(Lxwxh): Approx. 126 X 95 X 69Mm / 4.96 X 3.74 X 2.72In