Specifications: Made of high quality PC flame retardant shell, it is durable, safe and easy to use. It can protect electric system and on-loading electrical apparatus from thunder and instantaneous over-voltage. A protector is needed to prevent thunder and lightning from happening in the family house. This product is used for equipotential connection when lightning strikes, and when lightning occurs, it responds quickly and unloads the voltage to protect the safety of household appliances and you. Type: 4P Surge Protector Shell Material: PC Flame Retardant Shell Product Models: 1#: 40KA, 2#: 65KA, 3#: 80KA Number of Poles: 4P Response Time: ≤25ns Rated Voltage: 385V 3c Rated Voltage Range: 220V-385V Maximum Discharge Current: 80KA Nominal Discharge Current: 40KA Voltage Protection Level: 40KA 1.8 KV/65KA 2.2KV/80KA 2.4KV Installation Requirements: Use Standard 36mm Guide to Install and Use With Circuit Breakers in The Distribution Box Features: Easy to Install, Lightning Protection, Durable Size: 3.6cm x 4.9cm x 9cm/1.42" x 1.93" x 3.54" (Approx.) Notes: Due to the light and screen setting difference, the color of item may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x 4P Surge Protector