Square D by Schneider Electric EJB34040N is a 3‑pole molded‑case circuit breaker rated for 40 A in 480Y/277 VAC three‑phase systems. As part of the EJB family, this E‑Frame, bolt‑on MCCB provides thermal‑magnetic protection with long‑time and instantaneous trip functions and carries a 65 kAIC interrupt rating at 480 V. It protects feeders and branch circuits in commercial and industrial panelboards and switchgear that operate on 3‑phase 480 V distributions.
