Square D QO335 35A 3P 240V Circuit Breaker, QO, Plug-On | AmpState

Meet the Square D QO335 35A 3P 240V Circuit Breaker — a purpose-built safeguard for everyday electrical work. Designed for panelboards, load centers, and electrical distribution, this QO plug-on breaker offers a precise, on-spec replacement where a direct part-number match truly matters.

• Part Number: QO335
• Type: QO Plug-On Circuit Breaker
• Amperage: 35 A
• Poles: 3
• Voltage: 240 V
• Manufacturer: Square D
• Availability: Available from AmpState

Why this matters

In professional panels, compatibility isn’t optional — it’s essential for safety and performance. The QO335’s plug-on design enables quick, secure mounting on the bus and ensures the breaker's electrical characteristics align with Square D QO panelboards. By choosing an exact part-number match, you avoid the uncertainty of substitutes and preserve the panel’s approved protection scheme.

Ideal use cases

• Replacement in QO-series panelboards and load centers for 35 A, 3-pole, 240 V circuits
• Spare inventory for maintenance vehicles, panel builders, and service teams who rely on direct-fit parts
• Retrofits or new-builds in commercial or light industrial distributions that require a true QO plug-on breaker

What you gain with this part

• Fast, tool-friendly installation thanks to the plug-on design
• Reliable protection specifically matched to 240 V, 35 A, three-pole circuits
• Peace of mind from using a genuine Square D QO component with confirmed compatibility
• Clear path to confirm fit — if you’re unsure, message us and we’ll help verify compatibility

Designed for professionals who value exact-fit reliability, the QO335 from AmpState is your trusted choice for safe, consistent circuit protection in everyday electrical systems. Add it to your cart for a precise, ready-to-install solution that keeps panel performance predictable and compliant.