Feature:1. MAIN FUNCTION: This transfer switch switches to standby power supply during power failure, and is ideal for various places where power failure is not allowed.2. MILLISECOND RESPONSE: When main power supply is abnormal, the standby power supply will work immediately. This switch can ensure the continuity, reliability and safety of the power supply.3. AUTO MANUAL MODES: The power transfer switch can be switched automatically or manually, easy to operate.4. RELIABLE MATERIAL: PC flame retardant shell has good insulation, high temperature resistance, aging resistance, safe and reliable. Silver contact can greatly improve the conductivity and service life.5. DIN RAIL MOUNTING: This dual power automatic switch is designed for installation with 35mm standard guide rail, and is dedicated for PZ30 distribution box.Specification:Item Type: Dual Power Automatic Transfer SwitchMaterial: PC, SilverModel: GFQ3 100 4PRated Current le: 100AInsulation Voltage Ui: AC690VRated Voltage Ue: AC400VFrequency: 50 60HZRated Control Voltage US: 220VAC 85% Us to 110% UsLevel: PC levelSpecification: 4PService Life: Electrical: 2000 times, Mechanical: 5000 timesRated Short Circuit Current: 50kAFuse: RT16 00 63ARated Impulse Withstand Voltage: 8kVAuxiliary Circuit: Two relays, each relay has two sets of contact capacity: AC220V 50HZ le=5yTouch Time: