The SAE J1772 connector is a standard connector for electric power transfer between a charging station and an electric vehicle (EV). It provides alternating current (AC) electric power up to 80 amperes with voltages of either 120 volts or 208-250 volts. Some key details about the SAE J1772 connector:
• It has a 4-pin configuration with molded rubber seals to protect against environmental elements.
• Two pins are used for AC power transfer, one pin is for communications, and one pin is for ground.
• Supports AC charging up to 80 amps in one-phase and three-phase configurations. Level 1 charging is up to 3 kW, Level 2 charging is up to 25 kW.
• The connector is compact, rugged, and durable, designed to handle repeated connections and thousands of charging cycles.
• It is the most common public charging connector standard used in the U.S. and several other countries.
• The connector shell and pins are resistant to corrosion and chemical exposure. It can operate in temperatures ranging from -40°C to 85°C.
• It provides both physical and electrical safety features to prevent incorrect connections, short circuits, and electric shocks.
• Multiple pins allow for power levels beyond 80A in the future. The standard is maintained by SAE International to allow for continued improvements.
• Both the J1772 connector and its mating inlet connector are available for purchase and installation. The inlet connector is mounted on the charging station or electrical outlet.
• Some EVs also include a J1772 charge cable as standard equipment or offer optional longer charge cables.