Schneider Electric FA14020B Molded Case Circuit Breaker

The Schneider Electric FA14020B Molded Case Circuit Breaker is a 1‑pole, 20‑amp protective device designed for 480Y/277‑V systems in commercial and industrial electrical distribution. As part of the FA I‑Line family, it employs a thermal‑magnetic trip and is a plug‑in, I‑Line style breaker, with a line‑side I‑Line connection and load‑side lugs configured for a B‑phase arrangement in compatible panels. Rated to interrupt up to 18 kA at 480 V and suitable for operation at 40°C ambient, this breaker provides reliable overcurrent protection for feeders and branch circuits in demanding environments. The FA14020B accepts 14–4 AWG aluminum or copper conductors on its terminals, offering flexible wiring options in compact MCCB installations. Ideal for use in 480Y/277 VAC applications where a compact, legacy Square D/SCHneider Electric MCCB is required, it combines precise electrical protection with straightforward installation in plug‑in, I‑Line panels.