FY14030B is a Square D / Schneider Electric 1‑pole molded‑case circuit breaker from the FY family, rated 30 A at 277 VAC, with an I-Line style plug‑in connection for 1P panelboards. It uses a thermal‑magnetic trip mechanism and carries a 14 kAIC interrupt rating at 240 VAC, packaged in an F-Frame (FY) form factor. Weighing about 2 lb, this 1P device protects a single branch circuit in commercial or industrial 277 VAC distribution systems.
