General Electric TJJ436400 Molded Case Circuit Breaker

General Electric's TJJ436400 molded case circuit breaker is a 3-pole device rated for 400 amperes and up to 600 volts, built to interrupt current in three-phase electrical systems when overloads or short circuits occur. As a molded case breaker, it is designed to be installed in electrical distribution panels and feeders where compact protection for higher-current circuits is needed in industrial or commercial settings. The TJJ436400 carries a 400 A rating with a 600 V maximum, and its three-pole configuration supports three-phase applications, enabling reliable protection for main distribution circuits and heavy-duty branch circuits in power networks. When fault conditions arise, the breaker trips to disconnect the affected circuit, helping to limit damage to conductors, equipment, and wiring insulation, and reducing the risk of electrical fires in protected systems. Being a General Electric part, the TJJ436400 represents a high-current protective device suitable for installations demanding robust, three-phase fault protection within the 400 A class and up to 600 V.