Square D QO1701021 70A 1-Pole 240 V Circuit Breaker

Meet the Square D QO1701021, a purpose-built 70A, 1-Pole, 240 V circuit breaker designed to protect high-demand 240V circuits within Square D QO panels. Built for dependable performance, this part slips into compatible QO load centers to deliver reliable overcurrent protection where it matters most.

With a 70-amp current rating, the QO1701021 is tailored for sizable 240V loads—perfect for feeders to subpanels or single high- draw appliances in residential or light commercial settings. The 1-Pole configuration offers a streamlined solution for compact 240V circuits, helping you maximize panel space without compromising safety.

Why this specific breaker matters

This is the exact replacement or upgrade part for existing QO-series panels. Using the QO1701021 (part number QO1701021) ensures compatibility with your Square D setup, simplifying procurement and installation while maintaining consistent electrical protection across your system.

Ideal use cases

• Protecting large 240V appliances such as air conditioning condensers or electric water heaters
• Feeding subpanels or large 240V circuits in workshops, garages, or small commercial spaces
• Replacement in residential or light commercial panels that accept Square D QO breakers

Installation and compatibility tips

Install this 70A 1-Pole 240V breaker in a compatible Square D QO panel following all applicable electrical codes. Ensure the connected load does not exceed the 70-amp rating and that wiring and terminations are secure. For best results, rely on a licensed electrician for installation or replacement.

Product at a glance

• Part Number: QO1701021
• Current rating: 70 A
• Poles: 1
• Voltage rating: 240 V
• Brand family: Square D QO circuit breakers