Square D FA26090BC I-Line Molded Case Circuit Breaker

The Square D FA26090BC I‑Line molded‑case circuit breaker is a 90 A, two‑pole device rated for 600 V AC, designed for use in Square D I‑Line panelboards and switchboards. As part of the FA family, it uses I‑Line plug‑in mounting for quick installation in compatible enclosures and is specified for 1‑phase operation in a 2P configuration. It carries an 18 kA interrupting rating at 480 V (AIC), providing dependable protection against short‑circuit faults in medium‑voltage distribution feeders and branch circuits. This MCCB is built to 600 V class performance and aligns with Square D’s I‑Line interface and FA series trip characteristics, making it suitable for industrial or commercial protection schemes that require a 90 A, 600 V, 2‑pole solution.