Square D EDB14020 Bolt-On 1-Pole Circuit Breaker

The Square D EDB14020 is a 1‑pole, 20‑amp bolt‑on circuit breaker designed for 277 VAC circuits in commercial panelboards. This thermal‑magnetic unit provides overload protection and fast short‑circuit interruption, with a bolt‑on mounting that fits Square D EDB‑frame enclosures and supports field wiring in compatible installations. It accepts 12 to 14 AWG conductors and is specified for single‑pole, 1‑phase operation, making it suitable for lighting and low‑to‑mid‑amp branch circuits in office, retail, and industrial environments that use 277 VAC distribution. The device carries a maximum interrupting capacity rated up to 25 kA, providing robust fault‑current handling for systems with higher inrush or surge potential common in commercial loads. As part of the EDB family, the EDB14020 shares its form factor and trip characteristics with other bolt‑on breakers in this line, enabling consistent protection across panels built to accept EDB‑style devices. Typical applications include protecting lighting feeders and general circuits in buildings powered from 277 VAC lighting rails, where dependable, code‑compliant circuit protection is required without relying on plug‑on designs. Always verify enclosure compatibility and the panel’s labeling to ensure EDB bolt‑on breakers are appropriate for your specific installation and wiring methods.