FA26020BC BU is a Square D FA series two‑pole molded case circuit breaker rated for 20 A at up to 600 V, designed for I‑Line panel installations. It features line‑side I‑Line connections, a BC phase configuration, and load‑side lugs that accept 14‑4 AWG aluminum or copper conductors. The thermal‑magnetic trip mechanism is 80% rated, with interrupting ratings of 25 kA at 240 V, 18 kA at 480 V, and 14 kA at 600 V. This unit is intended for protection of circuits in FA I‑Line distribution panels and complements other FA frame breakers in Schneider Electric’s Square D lineup.
