Square D QOU330 - 30A, 240VAC, 3-Pole, Circuit Breaker

Introducing the Square D QOU330 — a rugged 30A, 240V circuit breaker built for demanding three-phase environments. This 3-pole device delivers reliable overcurrent protection for distribution panels, switchboards, and control panels, helping safeguard motors, pumps, and other three-phase loads.

Designed to protect all three phases simultaneously, the 3-pole configuration ensures synchronized trips across lines, reducing the risk of phase imbalance and minimizing equipment wear. With a 240 VAC rating, it fits standard three-phase power setups commonly found in industrial facilities and OEM applications.

Why the QOU330 stands out

• Three-pole, 30A protection: precise, coordinated interruption across all phases for safer, more reliable circuit protection.
• Compact, panel-friendly design: streamlined installation in panelboards, switchboards, and control panels without unnecessary bulk.
• Motor and controls protection: fast isolation of faults helps prevent overheating and damage to critical equipment like conveyors, fans, pumps, and HVAC systems.
• OEM-ready reliability: built for repeated cycling in high-use environments, supporting long service life in industrial and commercial settings.

Ideal applications

• Industrial motor control centers and distribution panelboards
• Commercial HVAC and three-phase pump systems
• OEM equipment requiring dependable three-phase overcurrent protection

Specifications at a glance

• Current rating: 30A
• Voltage rating: 240VAC
• Poles: 3-Pole
• Breaker type: Circuit Breaker
• Recommended uses: distribution panels, switchboards, and control panels in industrial, commercial, and OEM applications

Practical setup tips

When selecting the QOU330, confirm that your enclosure and wiring are configured for a 3-phase, 240V system and that the mounting and termination method align with your panel design. Plan for proper safety procedures during installation and coordinate protection strategies to achieve effective short-circuit and overload protection across all three phases.