Square D QO290 - 90 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

Square D QO290 — 90A, 240V, 2-pole plug-in molded case circuit breaker. Built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers.

Fast, plug-in installation with a quick connection that minimizes downtime during maintenance or replacements. This makes it a practical choice for busy electrical environments where time is money.

Thermal-magnetic protection for stable, repeatable performance. The thermal element handles overload protection, while the magnetic element provides immediate response to short circuits, helping to safeguard wiring and devices.

Designed for seamless compatibility with matching OEM load centers and panelboards, the QO290 fits squarely into Square D’s QO-series ecosystems—ensuring reliable operation and consistent electrical characteristics across components.

Why this 2-pole 90A breaker stands out

• Two-pole design protects both hot legs in a 240V circuit, delivering coordinated protection for connected equipment.
• 90A rating is well-suited for substantial branch circuits, feeders, or subpanel inputs within residential, commercial, and light industrial settings.
• Plug-in molded-case construction combines durability with service-friendly installation, reducing panel downtime and easing future replacements.
• OEM compatibility ensures a precise fit and reliable electrical performance in existing Square D panelboards and load centers.
• Versatile applications—efficiently supports everyday panel protection tasks across homes, offices, and small facilities.

Technical specifications

• Manufacturer: Square D
• Part number: QO290
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 90A
• Voltage rating: 240V
• Number of poles: 2
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Equip your panel with the Square D QO290 to deliver reliable, straightforward protection that installers and facility managers can rely on. Its plug-in design, robust thermal-magnetic trip, and OEM compatibility make it a practical, future-ready choice for safeguarding electrical systems in a wide range of environments.