Square D EHB34100 - 100A, 277VAC, 3-Pole, Circuit Breaker

Meet the Square D EHB34100 — a 100A, 277VAC, 3-Pole circuit breaker engineered for tough, real-world environments where dependable overcurrent protection is non-negotiable. Designed to support three-phase systems, this unit is a reliable fit for panelboards, switchboards, and control panels that keep critical equipment running smoothly.

• Three-pole design delivers balanced protection across all phases in 3-phase circuits, simplifying wiring and improving trip coordination.
• 100 Amp rating handles high-load scenarios common in motors, pumps, and heavy machinery without compromising safety.
• 277 VAC operation targets lighting and control circuits in larger commercial or industrial installations, where 277V is a standard requirement.
• Durable Square D construction provides trusted performance and long-term reliability in demanding panel environments.
• Versatile installation suitable for panelboards, switchboards, and control panels, making it a practical choice for new builds and retrofits alike.

This breaker is ideal for:

• Facilities engineers and electricians managing three-phase distributions in factories, warehouses, and large commercial buildings
• OEM equipment designers integrating robust protection into motor control centers and control panels
• HVAC, pumping, and conveyor system installations where reliable 277V control circuits are essential

Why choose the EHB34100? It pairs a precise 100A protection level with 277VAC compatibility, enabling strong, reliable safeguarding of three-phase circuits without over- or under-sizing protective devices. Built to integrate with Square D panelboards, switchboards, and control panels, it helps streamline part compatibility and maintenance across your electrical distribution ecosystem.

Key specifications: Current rating — 100A; Voltage rating — 277VAC; Poles — 3-Pole; Breaker type — Circuit Breaker. For installations that demand solid, three-phase protection in industrial, commercial, and OEM applications, the EHB34100 delivers clear value and dependable performance.

Installation and safety considerations: Ensure compatibility with your panel and bus arrangement, mount the unit according to manufacturer guidelines, and follow local electrical codes or the panel manufacturer's instructions for wiring and termination torque. This approach helps maintain safe operation and optimal protection across your distribution system.