Schneider Electric BDA34040Y Molded Case Circuit Breaker

Schneider Electric's PowerPact B-Frame BDA34040Y is a 40 A, three‑pole molded‑case circuit breaker engineered for 480Y/277 VAC distribution, featuring I‑Line plug‑in line terminals for fast, secure panel installation and a load end with mechanical lugs. It provides overload and short‑circuit protection with thermal‑magnetic tripping, including distinct long‑time and instantaneous trip functions, and carries an 80% continuous‑load rating to support sustained commercial and light industrial service within code. The device offers an interrupting rating of 18 kA at 480Y/277 VAC (and 25 kA at 240 VAC), making it suitable for medium‑energy circuits while maintaining coordination with upstream protection; its PowerPact B‑Frame designation signals compatibility with other B‑Frame devices and a compact footprint within standard enclosures. The BDA34040Y is UL Listed, CSA Certified, and IEC rated, reflecting Schneider Electric's commitment to global safety and interoperability for Square D protection devices in electrical distribution systems.