Feature:1. SAFE PROTECTIVE COVER: This product has reasonable structure, small size, beautiful appearance, and has a protective cover, which makes the power supply safer and more reliable2. ENSURE NORMAL LOAD: When the power supply fails (only test the normal A phase voltage and maintain the A phase voltage, only test the loss of voltage or phase loss), will automatically connect one or more load circuits from the power supply to another power supply to ensure normal power supply load. The power supply of the circuit ensures a good protection function3. NOISELESS AND ENERGY SAVING: EPS fire fighting power interface, DC12~24V reliable, long distance double point, bring noiseless operation, energy saving, easy installation, simple operation, reliable and stable performance4. COMPLETE PROTECTION FUNCTIONS: Come with short circuit protection, overload protection, under voltage protection, as well as fire protection, dual output and shutdown signal functions5. WIDE APPLICATION: Widely used in the installation and use of lighting circuits in office buildings, shopping malls, banks, stations, hospitals and high rise buildings with fire protection requirementsSpecification:Item Type: Dual Power Automatic Transfer Switch Model: NLQ4-125-4PRated Voltage: 400VRated Current: 125ARated Frequency: 50Hz/60HzRated Short Circuit Current: 3kAMechanical Life: Automatic: 3000 Times; Manual: 1500 TimesRated Insulation Voltage: 500VHow to Use:1. According to the circuit design, it is necessary to connect the public power supply and the backup power supply. Two circuit breakers are connected in parallel, but the phase sequence is the same2. If the circuit breaker is class 3, the neutral line must be connected to the 2# and 4# neutral terminals3. It should be checked before installation, and the product should be installed dryPackage List:1 x Dual Power Automatic Transfer Switch1 x User