Square D QOU315VH 15A 3-Pole 315 V Circuit Breaker

Meet the Square D QOU315VH 15A 3-Pole 315 V Circuit Breaker — a precise, reliable overcurrent protector designed for three-phase electrical systems. With a 15-amp rating and a 315 VAC maximum, this breaker delivers dependable protection while fitting neatly into Square D panelboards that support QO-style devices. Part number QOU315VH ensures exact compatibility with your existing Square D installation.

• Three-pole protection provides synchronized disconnection for all phases in a 3-phase circuit, helping prevent imbalanced loads and equipment damage.
• Voltage rating: 315 VAC suitable for higher-voltage commercial and light-industrial applications.
• Current rating: 15 A ideal for motor circuits, control panels, and balanced loads that require reliable protection without nuisance trips.
• Part number QOU315VH ensures precise compatibility with Square D panelboards and the broader QO family of breakers.
• Durable construction built to withstand demanding environments common in commercial and industrial settings, while maintaining steady performance in standard Square D installations.

Ideal for engineers, electricians, and technicians working on three-phase systems who need robust protection for motors, compressors, HVAC equipment, and 3-phase distribution panels. This breaker is a practical choice for facilities upgrading or maintaining equipment that operates at up to 315 V and requires dependable 3-pole protection.

Use cases include protecting three-phase motors in manufacturing lines, safeguarding compressors in HVAC and process equipment, and integrating into panelboards that serve factory floors, data centers, or workshops with 3-phase power.

Why choose this model — instead of using multiple single-pole devices, a 3-pole solution like the QOU315VH delivers coordinated protection across all phases, simplifying wiring and improving trip reliability for multi-phase loads.

Practical tips: - Verify your panel accepts QO-type breakers and that the QOU315VH rating matches your system requirements - Align voltage and current ratings with your load to minimize unnecessary trips while ensuring adequate protection - When replacing an existing breaker, keep the same three-pole configuration and trip rating to maintain panel balance and protective coordination