Feature:1. Good PC and Silver: Flame retardant PC plastic material is used, which has good insulation, high temperature resistance, aging resistance, safety and reliability. The use of silver contact with terminal protection cover can greatly improve the conductivity and service life of the product.2. Two Operating Modes: Automatic or manual operation, millisecond switching without power outage, compact structure, reliable transmission, and convenient installation and maintenance. Widely used in various situations where continuous power outages are not allowed.3. 35mm Standard Rail Installation: The dual power automatic switch is a miniature household power switch mainly used to test whether the main or backup power supply is normal, to ensure the continuity, reliability, and safety of the power supply. This product is designed specifically for installation and is specifically designed for PZ30 distribution boxes.4. Millisecond Level Switching: When a normal power supply encounters an abnormality, the backup power supply immediately operates. Millisecond level switching achieves the effect of continuous power supply, ensuring the continuity, reliability, and safety of power supply.5. Wide Application: Switch to backup power supply during power outage, switch to main power supply during incoming call, suitable for emergency power supply systems with rated 220V AC at 50 or 60Hz, widely used in various places where continuous power outage is not allowed such as factories, shopping malls, seedling farms and other places.Specification:Item Type: Dual Power Automatic Transfer SwitchModel: NLQ5-100/4PMaterial: Flame Retardant PC, SilverInsulation Voltage Ui: AC690V 50HZRated Voltage Ue: AC400V 50HZLevel: PC LevelSpecification: 4PRated Control Voltage US: 220VAC 85% Us-110% UsLife: Electrical: 2,000 times. Mechanical: 5,000 times. Rated Short Circuit Current: 50kAFuses: RT16-00-63ARated Impulse Withstand Voltage: 8kVAuxiliary Circuit: Two relays, each with two sets of contact capacity: AC220V50HZ le=5yTouch Time: <50msOperation Conversion Time: <50msReturn Time: <50msClosing Time: <50ms.Package List:1 x Dual Power Automatic Transfer Switch2 x Protective Cover1 x Accessory1 x User ManualNote:1. The maximum ambient temperature shall not exceed 40 , the minimum temperature shall not be lower than 5 , and the average temperature within 24 hours shall not be higher than 35 .2. The altitude of the installation site should not be higher than 2000m.3. When the maximum temperature reaches 40 , the relative humidity of the installation site should not exceed 50%. When the temperature is the lowest temperature 5, the relative humidity is higher, for example, when the temperature is 25, the relative humidity is 90%. Due to temperature changes, special measures should be taken to deal with occasional condensation on the surface of the product.