General Electric TJJ436400 U Molded Case Circuit Breaker

General Electric TJJ436400 U molded case circuit breaker is a high-current protective device rated for 400 A at up to 600 V, designed to interrupt overcurrent in electrical distribution panels and equipment. This GE unit belongs to the TJJ family of molded case breakers and combines a compact form with robust interrupting capability to safeguard feeders and branch circuits in commercial and industrial installations. The 400 A rating supports protection for feeders feeding large loads, while the 600 V maximum operating voltage defines its suitability for distribution within building infrastructure and equipment rooms. As a molded case breaker, it is intended to fit GE enclosure systems and bus assemblies that accept TJJ series devices, offering a reliable solution for overcurrent protection in panelboards and switchgear. With standard trip and interruption characteristics typical of GE molded case breakers, this unit provides fast, predictable protection against short circuits and overloads, contributing to electrical safety and system reliability in settings where up to 600 V service and 400 A circuits are present.