Schneider Electric FH16020B Molded Case Circuit Breaker

Schneider Electric's Square D FH16020B is a gray, 1-pole molded‑case circuit breaker in the FH family, rated for 20 A at 277 VAC and listed for 125 VDC. It uses a thermal‑magnetic, B‑curve trip mechanism to protect a single circuit from overcurrent conditions. The unit features a line-side I‑Line connection and a phase connection identified as B, with load-side lugs that accept 14–4 AWG aluminum or copper conductors and is 80% rated for continuous operation. Its interrupting rating is documented up to 25 kA at 277 VAC (65 kA at 120 VAC in some specifications), making it suitable for higher fault‑level environments within the FH‑series ecosystem. This FH16020B is designed for use in Square D FH panels and enclosures, delivering reliable overcurrent protection for single circuits such as lighting, receptacle runs, and small motors operating at 277 VAC.