Square D QO335 - 35 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D QO335 is a purpose-built 35A, 240V, 3-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Engineered for fast, reliable installation, this breaker slips into compatible QO OEM load centers for minimal downtime and maximum protection.

Key benefits and what it means for your electrical system

• Fast plug-in connection enables quick installation and straightforward replacement, reducing service interruptions and maintenance time.
• Thermal-magnetic trip unit provides stable, repeatable protection by responding to both overloads and short circuits, helping to prevent nuisance trips and equipment damage.
• 3-pole design ensures simultaneous disconnection across all conductors in three-phase or multi-pole configurations, enhancing safety and code compliance in larger installations.
• OEM-compatible compatibility with matching Square D QO load centers and panelboards ensures seamless integration without aftermarket adapters or modifications.
• Versatile applications suitable for residential, commercial, and light industrial environments where reliable protection and easy maintenance matter.

Specifications at a glance

• Manufacturer: Square D
• Part Number: QO335
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 35A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an aging panel, stocking a service van with a reliable replacement, or provisioning a new installation, the QO335 delivers predictable protection where it matters most. Its thermal-magnetic trip behavior minimizes unexpected outages while still reacting quickly to dangerous faults, helping protect wiring, devices, and people.

For electricians and facility managers looking for a dependable, OEM-compatible solution, the Square D QO335 provides straightforward compatibility with QO-series panelboards and load centers, making it a practical choice for both routine maintenance and critical upgrades.