Feature: 1. HIGH EFFICIENCY: This transfer switch supports automatic or manual operation, millisecond switching without power outage, reliable transmission, used in places where continuous power outages are not allowed. 2. WORKING PRINCIPLE: When there is an abnormality in the normal power supply, the backup power supply immediately operates, ensuring the continuity, reliability, and security of the power supply. 3. WORKING PARAMETER: This automatic transfer switch is suitable for emergency power supply systems with a 50/60Hz rated AC 80A, and is specifically designed for PZ30 distribution box. 4. DURABLE MATERIAL: The shell of the transfer switch is made of flame retardant PC material, with good insulation and high temperature resistance, and uses silver contacts, which is safe and reliable. 5. WIDE APPLICATION: This dual power transfer switch is an isolation type with less interference, widely used in scenarios such as homes, shopping malls, factory, laboratories, and farms. Specification: Item Type: Automatic Transfer Switch Material: PC, Silver Switch Type: Secondary Distribution Rated Current: 80A Rated Frequency: 50Hz/60Hz Electrical Level: PC Level Isolation Type Touch Time: <50ms Operation Conversion Time: <50ms Return Time: <50ms Closing Time: <50ms Size: Approx. 143 x 96 x 69mm / 5.6 x 3.8 x 2.7in . Package List: 1 x Automatic Transfer Switch Note: 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 2000m3. 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.