Square D QO235GFI - 35A, 2-Pole, GFCI Ground-Fault Circuit Breaker

Meet the Square D QO235GFI — a precise 35A, 2-Pole GFCI ground-fault circuit breaker built for demanding electrical environments. Designed to pair with the Square D QO family in panelboards, switchboards, and control panels, this unit delivers reliable overcurrent protection with integrated ground-fault detection to keep people and equipment safer in operation.

Key features that set the QO235GFI apart:

• 35 Ampere rating — ideal for protecting feeders and branch circuits without unnecessary interruptions.
• 2-Pole configuration — protects both hot legs in 120/240V systems, ensuring complete circuit coverage.
• GFCI (Ground-Fault Circuit Interrupter) protection — detects leakage to ground and trips to reduce shock risk and equipment damage.
• Square D QO family compatibility — designed for seamless installation in panelboards, switchboards, and control panels that use the QO interface.
• Industrial, commercial, and OEM applications — a dependable choice for distribution panels and motor control centers where consistent safety and reliability matter.

Why this GFCI breaker matters

In environments where human safety and continuous operation are non-negotiable, the QO235GFI delivers more than just current interruption. The ground-fault sensing capability rapidly clears faults that could lead to electric shock, while the 2-pole design ensures balanced protection across both conductors. This combination helps minimize unplanned downtime in critical systems and supports safer, code-aligned distribution networks.

Ideal use scenarios

• Industrial control panels and motor control centers requiring reliable ground-fault protection
• Commercial distribution panels where safe operation for personnel and equipment is essential
• OEM equipment builds that need a compact, plug-and-protect GFCI solution within the Square D QO ecosystem

How it helps you versus standard breakers: while a traditional overcurrent device stops excess amperage, the QO235GFI adds ground-fault awareness to prevent shock hazards and minimize nuisance faults caused by leakage currents. For installers, this means a straightforward, robust protection option that integrates cleanly with existing QO-panel architectures.

Practical notes for deployment: verify that your panel or enclosure supports the QO series and that the 2-pole, 35A configuration aligns with the circuit’s load and wiring scheme. When used in distribution panels and motor control centers, this GFCI breaker enhances safety without compromising on reliability or ease of maintenance.