Schneider Electric FA34040 3 Pole Circuit Breaker

Schneider Electric FA34040 is a 3‑pole molded‑case circuit breaker from the FA family, rated 40 A at 480 V AC for three‑phase systems. It provides thermal‑magnetic overcurrent protection with a short‑circuit interrupting rating of 18 kA at 480 V, suitable for protecting feeders, motors, and distribution circuits in industrial panelboards. The FA34040 is designed for I‑Line plug‑on mounting in compatible Schneider Electric/Square D enclosures and accepts 14 to 1/0 AWG copper or 12 to 1/0 AWG aluminum conductors on the terminals. Its dimensions are approximately 4.5 in wide, 4.13 in deep, and 6 in high, and it carries UL/CSA/NOM listings for 480 V service (50/60 Hz). This 3‑pole MCCB is commonly used in 3‑phase electrical installations where reliable short‑circuit protection at 480 VAC is required.