Square D EDB14030 N Three-Phase 277V 30A Circuit Breaker

Square D EDB14030 N is a bolt‑on, E‑frame miniature circuit breaker rated for 277 VAC and 30 A in a single‑pole configuration, designed to protect individual circuits in 277‑volt systems. It delivers an 18 kA short‑circuit interrupting capacity at 277 V, making it suitable for typical commercial/industrial distribution panels that use the E‑frame bolt‑on style. The device accepts 14–6 AWG aluminum or copper conductors and is intended for use in Square D E‑frame panelboards that support bolt‑on breakers. Its physical footprint is about 5.7 inches in height, 1.0 inch in width, and 4.1 inches in depth, which aligns with other EDB1P units in the line. Note that Schneider Electric lists this model as discontinued as of March 2025, reflecting its status as a legacy part, though new surplus and available inventory from distributors may still exist. Product identifiers and validators confirm: 1P, 30A, 277 VAC, EDB series, bolt‑on mounting, with the N designation commonly associated with these EDB14030 units in catalog listings.