This is a Mercury AVR-5000VA Automatic Voltage Regulator, which is a 5kVA power stabilizer designed to protect sensitive home and office electronics from unstable electricity and voltage fluctuations
Key Specifications & FeaturesCapacity: 5000VA / 5kVA output support.Display: Digital meter screen on the red front panel to show voltage levels.Controls: Features a delay toggle switch (Delay/Normal) and an input circuit breaker switch (ON/OFF).
The maximum continuous input voltage that the Mercury AVR-5000VA can handle safely within its operating regulation range is 280V AC.
If the incoming grid or generator power goes higher than this limit, the stabilizer's automated protection system will trigger a "High Cut" isolation disconnect to completely shut down output power, protecting any connected appliances from over-voltage damage.