Square D QO330EPD - 30 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QO330EPD 30A, 240V, 3-Pole Plug-In Circuit Breaker—a purpose-built protective device designed for dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Its fast plug-in connection speeds installation and simplifies replacement, minimizing downtime in demanding electrical setups.

• Fast plug-in connection for quick installation and effortless replacement in OEM QO panelboards and load centers.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining a responsive magnetic short-circuit trip with a reliable thermal overload curve.
• Three-pole, 240V design provides coordinated protection for 240V circuits and multi-wire configurations, ideal for 3-phase panels or multi-pole distribution systems.
• 30A rating aligns with typical branch-circuit protection needs for feeders, motors, and outlets in modern electrical installations.
• OEM-compatible engineered to fit and perform with matching Square D QO load centers and panelboards for reliable electrical performance.
• Versatile applications suitable for residential, commercial, and light industrial environments requiring robust protection.
• Part Number QO330EPD makes sourcing and replacement precise and straightforward.

Technical snapshot

• Manufacturer: Square D
• Type: Thermal-magnetic molded case circuit breaker
• Amperage: 30A
• Voltage: 240V
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and practical scenarios

• Replacing a worn or tripped breaker in a compatible QO panelboard to restore reliable circuit protection without rewiring.
• Expanding a panel to add a new 240V circuit or a multi-wire branch circuit requiring coordinated trip across three lines.
• Maintenance or upgrade projects where minimizing downtime matters—the plug-in design enables faster serviceability compared with more cumbersome mounting styles.

Why this matters for your electrical system

The QO330EPD is more than a breaker—it’s a precise solution for protecting your electrical distribution. With a 30-amp rating and a thermal-magnetic trip unit, it guards against sustained overloads and fast-moving short circuits, reducing the risk of wiring damage and fire hazards. The plug-in mounting simplifies installation and replacements, while OEM compatibility ensures a seamless fit within Square D panelboards and load centers. For residential, commercial, and light industrial applications, this 3-pole 240V breaker delivers dependable protection where it counts, helping your electrical system stay safe, compliant, and ready for the next challenge.