Feature:1. 2 TYPES OF OPERATION: The changeover switch can be operated automatically or manually, milliseconds switching without power failure, widely used in various situations where continuous power failure is not allowed.2. SUPER FAST SWITCHING: When the normal power supply is abnormal, the standby power supply works immediately, with millisecond switching to achieve the effect of non stop power supply, ensuring the continuity, reliability and safety of the power supply.3. SILVER CONTACT: The contacts in the automatic transfer switch use silver contacts, which can greatly improve the conductivity and service life of the product.4. DIN RAIL MOUNTING: Dual power automatic switch designed for rail mounting, specifically for use in the PZ30 distribution box to test whether the main or standby power is working properly.5. PC HOUSING: The changeover switch is made of PC flame retardant plastic material with good insulation, high temperature resistance, anti aging, safe and reliable.Specification:Item Type: Automatic Transfer SwitchMaterial: PC, silverFrequency: 50, 60HZGrade: PC gradeSpecification: 2PElectrical Life: 2000 timesMechanical Life: 5000 timesRated Short Circuit Current: 50kAFuse: RT16-00-63AAuxiliary Circuit: 2 relays, each with 2 sets of contacts Capacity: AC220V50HZ le=5yTouch Time: <50msOperation Changeover Time: <50msReturn Time: <50msClosing Time: <50ms.Package List:1 x Automatic Transfer Switch1 x InstructionNote:1. The maximum surrounding temperature shall not exceed 40, the minimum 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 a minimum of 5, the relative humidity is higher, e.g. at 25, the relative humidity is 90%. Due to temperature changes, special measures should be taken to deal with occasional condensation on the product surface