Schneider Electric's Square D FH16020B is a 1-pole molded‑case circuit breaker rated for 277V AC and 20 amps, designed for use in I‑Line plug‑in distribution panels. As part of the FH family, it employs thermal‑magnetic trip technology with a B‑phase connection, suitable for protecting single‑phase 277V circuits in commercial installations. This model is rated for 80% continuous‑load operation, providing dependable overcurrent protection for lighting and other branch circuits in 277V distribution networks. The FH16020B is a compact, plug‑in breaker intended for panelboards where a 20A, single‑pole device is required.
