Square D QBL32100 - 100A, 3-Pole, Circuit Breaker

Square D QBL32100 is a high-performance 100A, 3-pole circuit breaker designed for demanding electrical environments. Built to protect three-phase systems, its three-pole design ensures all phases disconnect together, delivering reliable protection and reducing the risk of lingering voltages in critical equipment.

Key features and benefits:

• 100A current rating provides dependable overcurrent protection for feeders, motors, and distribution circuits in medium-to-large installations.
• 3-Pole configuration enables simultaneous disconnection of all three phases, ideal for three-phase panelboards, switchboards, and control panels.
• Versatile installation suitable for industrial, commercial, and OEM applications, including motor control centers and distribution panels where safe operation is paramount.
• Durable, straightforward protection designed to offer fast interruption of fault currents, helping to minimize downtime and protect downstream equipment from damage.

Smart use cases

• Motor control centers (MCCs) and three-phase motor feeders needing reliable, coordinated protection across all phases.
• Distribution panels in manufacturing lines, HVAC systems, and process controls where consistent, dependable overcurrent protection is critical.
• OEM assemblies requiring a compact, robust breaker that can be integrated into existing Square D or compatible panel configurations.

Why choose the QBL32100 in your electrical protection strategy

The QBL32100 combines a decisive current rating with a practical three-pole design that supports clean, safe shutdown of multi-phase systems. By ensuring all conductors trip together, it helps prevent phase imbalances and potential damage to connected equipment, offering peace of mind in mission-critical environments.

Designed for easy integration into panelboards and switchboards, this breaker supports stable operation in distribution networks and motor control applications. When you need dependable, industry-ready overcurrent protection for three-phase circuits, the Square D QBL32100 stands out for its focused performance, robust construction, and practical value in real-world setups.