Square D FA26100AC Molded Case Circuit Breaker

Square D FA26100AC is a molded‑case, 2‑pole circuit breaker designed for I‑Line plug‑in mounting in Square D distribution panels. It is rated for 100 A at 600 V AC and uses a thermal‑magnetic trip mechanism with an 80% continuous rating. The device delivers high interrupting capabilities of 25 kA at 240 V, 18 kA at 480 V, and 14 kA at 600 V, making it suitable for protecting feeders and bus sections in power distribution gear. Line‑side connections are I‑Line compatible, and the load side accepts 14–1/0 AWG aluminum or copper conductors via standard lug terminals. This FA series breaker is built for industrial applications where two‑pole protection is required in higher‑voltage systems, such as panelboards and switchgear, and is commonly used in environments rated up to 40°C ambient.