description: 1. SILVER CONTACTS FOR IMPROVED CONDUCTIVITY: The use of silver contacts for this purpose can ensure the conductivity and service life of the product 2. CONVENIENT OBSERVATION: Built-in open port for reception in a way that allows you to measure the time that can be connected to the reception indicator light, convenient for observation outside the cabinet, rail-type installation design 3 . FIREPROOF MATERIALS: Made of good quality fireproof plastics, containing good insulation, are resistant to high temperature, good for aging, safe and good 4. MILLISECOND SWITCHING WITHOUT INTERRUPTION: When normal operation is abnormal, the backup operation works immediately, and the operation is switched in milliseconds without interruption, which ensures the continuity, operation and safety of the power supply 5. IN DIFFERENT PLACES: Switch to backup operation for power source and switch to main when power is restored. Widely separated in different places where continuous power failure is not allowed, such as factory, shopping malls, nurseries, etc. Specification: Item Type: Automatic Dual Power Switch Product Model: NLQ4-125/4P Rated Current: 100A Rated voltage: 400 V AC Insulation voltage: 690 V AC Rated frequency: 50Hz/60Hz Electrical class: insulation type class PC Lifespan: Electric: 2000 times; Mechanical: 5000 times Rated short-circuit current: 50kA SCPD (Fuse): RT16-00-63A Rated pulse withstand voltage: 8kV Administrative circuit: Rated supply voltage Us: AC220 V 50Hz Normal working conditions: 85% of us-110% of us Auxiliary circuit: 2 independent relays, each relay contains 2 sets of transformer contacts Contact performance: AC220V 50Hz Touch time: <50 ms Operation time: <50ms Return time: <50 ms Location time: <50ms List of ingredients: 1 x Dual Power Switch 1. The maximum temperature should not exceed 40℃, the minimum should not exceed &＃8209;5℃, and the average temperature within 24 hours should not be higher than 35℃.2. The height of the position should not be lower than 2000m.3. When the maximum temperature has reached 40℃, the relative at the installation site should not exceed 50%; when the temperature is the lowest temperature &＃8209;5℃, the relative comparison is higher, for example, if the temperature is 25℃, the relative comparison is 90%. It is a special agent that helps to cope with immediate condensation to the surface of the product due to temperature change.4. When converting the internal insulation of the coil in its original shape. The coil can operate normally at 85%&＃8209;110% of the rated week. Too high voltage in the coil can be set to heat or burn the coil. Check the integrity of ATS before installation, enable or enable ATS for effective assistance, check the execution and standard and backup source generation and disconnection conditions at each stage.