Square D EJB24030U Molded Case Circuit Breaker

Square D EJB24030U Molded Case Circuit Breaker is a two-pole, 30-amp protector from Square D's EJB family (PowerPact E-frame). Designed for bolt-on installation in NF panelboards, this molded-case breaker is rated for 277/480Y VAC service and delivers 65 kAIC interrupting capability at 480 VAC and 100 kAIC at 277 VAC, enabling reliable protection for feeders, motors, and other loads in commercial and light-industrial environments. The device employs thermal-magnetic trip technology to quickly interrupt fault currents while minimizing nuisance trips, and its rugged molded housing provides durability in challenging electrical installations. As a 2P, 30 A breaker, it is commonly used to protect two hot legs in 240 VAC commercial circuits or as a protective device on 277/480 VAC distribution systems, enabling proper coordination with upstream protections and downstream equipment. The part is listed under Mfg #: EJB24030U and is the U variant within the EJB lineup, reflecting its place in Square D's legacy lineup of bolt-on, replaceable breakers for NF panels.