Square D ECB34020G3 Powerlink Circuit Breaker

Square D PowerLink ECB34020G3 is a 3-pole, 20-amp molded-case circuit breaker in the ECB-G3 family, designed for 480Y/277 VAC three‑phase systems and compatible with PowerLink panelboards used in commercial, institutional, and industrial electrical installations. This bolt-on, remotely operated device employs a thermal-magnetic trip to protect feeders and distribution circuits from overloads and short circuits. It carries a 14 kA interrupting rating at 480 VAC and 42 kA at 240 VAC, reflecting its capability to interrupt fault currents in typical building power networks. The ECB34020G3 is a 3-pole, 20 A breaker intended for use in PowerLink panels with 480Y/277 VAC service, and it is part of Schneider Electric’s protection lineup for coordinating overcurrent protection across three‑phase distribution. Typical applications include protection of feeders, motor circuits, lighting, and HVAC control circuits in commercial facilities and light industrial environments where 480V three-phase systems are prevalent.