Square D QOU335 35A 3P 240V Circuit Breaker | AmpState

Engineered by Square D for everyday electrical protection, the QOU335 is a 35A, 3-pole, 240V circuit breaker designed to guard panelboards, load centers, and distribution networks. It’s a dependable choice for retrofit projects and ongoing maintenance where preserving the exact part number matters, helping keep your electrical system consistent and compliant.

Key specifications

• Manufacturer: Square D
• Part Number: QOU335
• Product Type: Circuit Breaker
• Amperage: 35 A
• Poles: 3
• Voltage: 240V

Why this 3-pole 240V breaker stands out

The QOU335 delivers reliable, consistent protection for multi-wire and 3-phase distribution setups. Its three-pole design ensures coordinated shut-off across all connected conductors, reducing the risk of undetected overloads and improving overall electrical system safety. Built for compatibility with standard Square D panelboards and load centers, this part helps you maintain a uniform protection scheme across your facility or project.

• Standardized fit for retrofit and maintenance: Keeps your system consistent when the part number must stay unchanged.
• Trusted brand, predictable performance: Square D’s proven reliability translates to fewer unexpected trips and clearer troubleshooting.
• Efficient distribution protection: Ideal for 240V circuits that rely on stable, coordinated protection across three conductors.
• Availability and support: Available from AmpState with guidance to confirm fit and compatibility.

Ideal use cases

• Retrofit projects where maintaining the exact part number is important to avoid enclosure re-labeling or field adjustments.
• Routine maintenance planning for electrical distribution systems in commercial, industrial, or larger residential settings.
• Panelboard or load center upgrades that require a dependable 35A, 3P, 240V protection device.

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit, ensuring you get the right breaker for your specific panel and wiring configuration. Ready to secure reliable protection for your electrical distribution? Add the Square D QOU335 to your cart today—available now from AmpState.