Schneider Electric's Square D FA32040 I-Line molded‑case circuit breaker is a 40 A, 3‑pole device designed for 240 V three‑phase circuits in I‑Line panelboards, Type FA. It employs thermal‑magnetic protection for reliable overcurrent interruption and uses I‑Line bus connections for plug‑in mounting. A shunt‑trip accessory option is available for remote tripping in safety‑critical installations.
