Schneider Electric's Square D EDB34020 is a 20-amp, three-pole miniature circuit breaker from the E‑Frame family, designed for 480Y/277 VAC three‑phase systems. It uses bolt-on mounting and carries a 25 kA maximum short-circuit current rating, making it suitable for panelboards and industrial switchgear that require reliable 3P protection in a compact form factor. The device is TAA-compliant and specifically configured as a 3-pole, 480Y/277V breaker under the EDB34020 model, enabling safe protection of three‑phase circuits in commercial or light‑industrial power distributions that operate at 480Y/277 VAC.
