Square D QO235GFI 35A 2-Pole 240 V Circuit Breaker Potential Transformer

The Square D QO235GFI is a purpose-built 35-amp, 2-pole, 240-volt circuit breaker with integrated ground-fault protection (GFI). Built for reliability within Square D’s trusted QO family, this device delivers dependable protection for high-current 240V circuits while actively guarding against ground faults.

• Part Number: QO235GFI
• Current rating: 35 A
• Poles: 2
• Voltage rating: 240 V
• Protection type: GFI (ground-fault interrupter) for 240V circuits

Why choose a GFI-equipped 240V breaker? Ground faults on 240V circuits can pose serious shock risks to operators and can damage equipment. The QO235GFI detects imbalance between conductors and interrupts power instantly, reducing the likelihood of injury and equipment damage—especially on multiwire branch circuits where neutrals are shared.

Ideal use cases include 240V tools and appliances in workshops, garages, or commercial spaces where ground-fault protection is required or strongly recommended. It’s well-suited for circuits feeding 240V motors, air compressors, HVAC components, and other high-current loads that benefit from rapid fault interruption.

Compared to standard non-GFCI breakers, the QO235GFI adds essential safety without altering your panel configuration. It’s designed for Square D QO load centers and pairs seamlessly with other QO-series devices, delivering cohesive protection across your electrical system.

Practical installation and maintenance tips: verify compatibility with your Square D QO panel, follow manufacturer torque specifications, and test the GFI function regularly to ensure ongoing protection. When in doubt, consult a qualified electrician to ensure proper integration into your existing electrical setup.