Square D QO350GFI - 50A, 3-Pole, GFCI Ground-Fault Circuit Breaker

Meet the Square D QO350GFI — a 50A, 3-Pole GFCI Ground-Fault Circuit Breaker engineered for demanding industrial, commercial, and OEM environments. This robust device delivers precise ground-fault protection within panelboards, switchboards, and control panels, helping to safeguard personnel and critical equipment by disconnecting power quickly when a fault is detected.

Why the QO350GFI Stands Out

Designed to integrate seamlessly in Square D QO-style installations, the QO350GFI combines three essential strengths in one compact unit: reliable overcurrent protection, fast ground-fault interruption, and flexible three-pole configuration. It’s purpose-built for applications where safety and uptime are non-negotiable—whether you’re equipping a motor control center, a distribution panel, or a specialized control panel in an industrial setting.

• 50 Amp current rating delivers dependable protection for circuits feeding motors, drives, and other demanding loads.
• 3-Pole design supports three-phase systems common in commercial and industrial facilities, enabling efficient distribution and control.
• GFCI ground-fault protection quickly detects unintended current paths to earth, reducing shock risk and protecting both people and equipment.
• Versatile deployment ideal for panelboards, switchboards, and control panels, enhancing safety across multiple enclosure types.
• OEM-ready and industrial-grade built to withstand challenging environments while maintaining consistent performance.

Ideal Use Cases

Use the Square D QO350GFI in scenarios where reliable ground-fault protection is essential. It’s well-suited for:

• Motor control centers and drive panels in manufacturing facilities
• Distribution panels in commercial buildings with rigorous safety standards
• OEM panel assemblies requiring integrated GFCI protection
• Enclosures in environments with moisture exposure or heightened risk of ground faults

Performance, Safety, and Compliance

The QO350GFI delivers fast, predictable disconnection on ground faults, helping to minimize electrical shock hazards and equipment damage. By combining overcurrent protection with ground-fault interruption, it supports safer operation in distribution networks and control systems where quick response matters most. Its compatibility with the Square D QO family ensures straightforward replacement or upgrade in existing panels, reducing installation time and downtime.

Installation and Best Practices

For optimal results, pair the QO350GFI with compatible QO-style enclosures and bus configurations. Follow standard electrical code requirements for GFCI protection in your jurisdiction, perform routine function tests, and label protected circuits clearly to simplify maintenance and future inspections.

Maintenance and Troubleshooting

• Test the GFCI function regularly using the built-in test button to confirm proper operation.
• If nuisance trips occur, inspect for ground faults, moisture ingress, or wiring issues in the protected circuit.
• Keep the surrounding environment dry and free from contaminants that could affect breaker performance.

engineered for dependable overcurrent protection and safe operation in distribution panels and motor control centers, the Square D QO350GFI 50A 3-Pole GFCI Breaker is a precise, purpose-driven choice for professionals who won’t compromise on safety or reliability.