Square D EDB34100 Three Pole Bolt On Circuit Breaker

Square D EDB34100 is a 100-amp, three-pole bolt-on molded-case circuit breaker designed for 480Y/277V three-phase power systems. As part of the EDB series from Square D (Schneider Electric), it uses a thermal-magnetic trip mechanism to protect conductors and devices from overloads and short circuits. The bolt-on mounting style and compact E-frame construction facilitate installation in compatible panelboards and enclosures that accept EDB breakers. Key electrical characteristics include a 3-pole configuration, 100A rating, and 480Y/277V nominal voltage; the breaker provides an 18 kA interrupting capacity at 480V (277V) and up to 25 kA at 240V, depending on system conditions. This makes it suitable for protecting feeders or branch circuits in commercial and light industrial distribution networks that run on 480Y/277V power. Common applications include motor loads, lighting, and equipment in facilities that use Square D panelboards that accept EDB-series breakers. The unit is designed for bolt-on installation, offering a secure connection and straightforward replacement in compatible installations.