Square D QO330GFI - 30A, 3-Pole, Circuit Breaker

Meet the Square D QO330GFI — a 30A, 3-Pole circuit breaker furnished with built-in ground-fault interrupter (GFI) protection. Designed for demanding electrical environments, this unit extends dependable overcurrent protection to panelboards, switchboards, and control panels where safety and reliability aren’t optional.

• Three-pole configuration for 3-phase systems: Streamlines protection across all phases in distribution panels and motor control centers, reducing wiring complexity and simplifying maintenance checks.
• 30 amp rating: Delivers precise overcurrent protection tailored for motors, drives, and feeders without unnecessary trips in routine operation.
• GFI protection: Ground-fault interruption adds an essential safety layer in environments with moisture, conductive exposure, or high personnel contact risk, helping to prevent shock and equipment damage.
• Versatile compatibility: Fits within standard Square D QO panelboards, switchboards, and control panels, making upgrades, replacements, or OEM integrations straightforward.
• Ideal for industrial, commercial, and OEM applications: Built to endure the demands of distribution panels and motor control centers where reliable protection and safe operation matter most.

Why choose the QO330GFI? Because it combines proven Square D reliability with a three-phase, ground-fault protected design that reduces downtime and enhances safety in real-world use. In environments where three-phase power drives equipment and moisture or incidental contact is possible, this breaker provides the peace of mind that personnel and systems deserve.

Practical use scenarios

Use cases include protecting 3‑phase motors and feeders in manufacturing lines, distributing power to MCCs in control rooms, and safeguarding critical circuits in commercial facilities where GFI awareness is essential. OEM installations benefit from a compact, ready-to-integrate solution that aligns with existing Square D QO infrastructure.

Tips for optimal results

Ensure compatibility with your panelboard or switchboard family (QO series) and follow standard installation practices for three-pole breakers. Pair the QO330GFI with proper enclosure labeling, routine GFI function testing, and periodic inspection of conductors and connections to maintain peak protection performance over time.

In short, the Square D QO330GFI delivers targeted, reliable 30A, 3‑pole protection with integrated ground-fault safety — a smart choice for professional electrical design, maintenance, and OEM integration in demanding environments.