Specifications: Made of high-quality PC flame retardant shell, it is durable, safe and easy to use. Protects electrical systems and connected electrical equipment from lightning and instantaneous over-voltage. Used for equipotential bonding during lightning strikes, quickly responding to discharge voltage and protect household appliances and users. Type: 4P Surge Protector Shell Material: PC Flame Retardant Shell Model Variants: 1#: 40KA, 2#: 65KA, 3#: 80KA Number of Poles: 4P Response Time: 25ns Rated Voltage: 385V 3C Rated Voltage Range: 220V385V Maximum Discharge Current: 80KA Nominal Discharge Current: 40KA Voltage Protection Level: 40KA 1.8 KV / 65KA 2.2KV / 80KA 2.4KV Installation Requirements: Requires standard 36mm DIN rail installation and must be used 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 differences in lighting and screen settings, the item color may vary slightly from the images. Please allow slight dimensional variations due to manual measurement. Package Includes: 1 x 4P Surge Protector