Square D QO3100 - 100A, 3-Pole, Circuit Breaker

Meet the Square D QO3100 — a rugged 100A, 3-pole circuit breaker built to guard three-phase circuits against overcurrent in demanding environments. Designed for dependable performance in panelboards, switchboards, and control panels, this unit keeps critical equipment protected with precise, fast-acting interruption when faults occur.

Key specifications

• Current rating: 100A
• Poles: 3-Pole
• Breaker type: Circuit Breaker

Why this matters for your system

• Three-pole configuration supports balanced protection for three-phase systems, reducing the risk of damage from phase imbalances.
• Versatile installation in panelboards, switchboards, and control panels—fits a range of industrial, commercial, and OEM applications.
• Robust construction designed for ongoing duty in distribution panels and motor control centers, delivering reliable protection in demanding environments.
• Clear, dependable overcurrent protection helps minimize downtime and extend the life of downstream equipment.

Ideal use cases

• Protection of three-phase feeders in industrial facilities with motors, conveyors, and presses
• Upgrades or retrofits to existing distribution panels requiring reliable 3-pole protection
• OEM applications where compact, durable protection is integrated into control panels and switchgear

Who this is for

Engineers, facilities managers, and electrical contractors who need trustworthy, three-phase overcurrent protection in panelboards, switchboards, and motor control centers. If your project demands robust performance, clear protection, and straightforward installation in a three-phase environment, the QO3100 delivers.

In short, the Square D QO3100 combines precise 100A protection with a practical 3-pole design to safeguard your critical loads and keep systems running smoothly in industrial, commercial, and OEM settings.