FI26020AB is Square D / Schneider Electric Type FI I‑Line molded‑case circuit breaker, a two‑pole, 20‑amp unit designed for up to 600 V AC service. It uses I‑Line plug‑in mounting with an A/B phase configuration to provide overload and short‑circuit protection via a thermal/magnetic trip and current‑limiting action. The device carries a 200 kA interrupting rating at 480 V, making it suitable for higher fault currents in commercial or industrial panels that require compact, two‑pole protection.
