Overvoltage, undervoltage and blackout protection for 220V appliances such as air conditioners.  Protection against instantaneous spikes and ground connection.  Overvoltage, undervoltage, standby cycle and nominal voltage indicators. 

Voltage: 220V - 50/60Hz 

Maximum Capacity: 4400VA-20AMP, 35000 BTU

High Voltage: 255-270V

Low Voltage: 170-185V

Delay Time: 3 Minutes

Surge Suppressor: 140J

Input Connection: L1 - L2 - G

Output Connection: G - L1 - L2 

CE Approved

Protector must not exceed 35,000 BTU, 20AMP - 4400 VA