Square D EGB34030 U Molded Case Circuit Breaker

Square D EGB34030 U Bolt-On Molded Case Circuit Breaker is a 30-amp, three‑pole protective device designed for bolted‑on installation in Square D EGB frames. Rated for up to 480Y/277 VAC, it interrupts faults on 3‑phase feeders in panels that accept EGB bolt‑on breakers. As part of the EGB molded‑case family, the 30 A variant provides overcurrent protection for distribution circuits and supports bolt‑on mounting in 1, 2, or 3‑pole configurations within the 15–100 A range. The device is rated for an interrupting capability up to 35 kA at 480/277 VAC, making it suitable for moderate fault currents commonly seen in commercial/industrial panelboards. Typical applications include motor feeders, HVAC equipment, and other 3‑phase loads in switchgear and control panels that operate at 480 V. When selecting a replacement, confirm that your enclosure and panel accept EGB34030 bolt‑on MCCBs and that installation clearances meet the manufacturer’s requirements.