Square D EDB14020 Type EDB Circuit Breaker 277V

Square D by Schneider Electric EDB14020 Type EDB is a 1‑pole, 20 A miniature circuit breaker designed for 277 V AC circuits in commercial and industrial panels. It is a molded‑case, E‑Frame, bolt‑on device that provides thermal‑magnetic protection and is UL Listed and CSA Certified. The EDB14020 has an 18 kA interrupting capacity at 277/480Y VAC and 25 kA at 120 VAC, making it suitable for branch circuits feeding lighting and general power in 277 V distribution systems. Wiring options include aluminum 12–6 AWG and copper 14–6 AWG, with bolt‑on mounting for secure installation. Official dimensions are approximately 4.05 in long, 0.98 in wide, and 5.50 in high, and it operates at standard 50/60 Hz. This unit is part of Square D’s E‑Frame family, designed for use in commercial/control panels where reliable overcurrent protection at higher voltages is required. Typical applications include protection of 277/480Y systems serving HID lighting, motors, and general power circuits in industrial or large commercial installations where consistent 277 V distribution is used.