Square D QO315 - 15 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QO315—a 15 A, 240 V, 3-pole plug-in molded case circuit breaker designed to guard branch circuits in panelboards and load centers. Its plug-in connection enables quick installation and straightforward replacement, making maintenance less disruptive and downtime shorter. Built to integrate with the Square D QO family, this breaker delivers reliable, ready-to-ship protection where you need it most.

Why this matters for your electrical system: a dependable plug-in breaker speeds up service during upgrades, repairs, or relocations, while the 3-pole 240 V configuration supports 3-phase applications common in commercial and light industrial panels. The result is faster turnarounds, fewer field wiring errors, and consistent protection across your circuits.

Key features

• Fast plug-in connection for quick installation and replacement in compatible panelboards and load centers
• Thermal-magnetic trip unit delivers stable, repeatable protection for overloads and short circuits
• 3-pole design suited for 3-phase systems and larger branch circuits
• Compatibility with matching OEM load centers and panelboards from the Square D QO family
• Application versatility appropriate for residential, commercial, and light industrial environments

Specifications

• Manufacturer: Square D
• Part Number: QO315
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and practical benefits

- Upgrading or extending a 3-phase panel in a light commercial space where 240 V circuits are standard. The QO315’s plug-in design minimizes labor time during replacement projects.

- Installing new branch circuits in residential or small business settings that rely on the Square D QO ecosystem for consistent performance and compatibility.

- Quick, on-site protection of equipment and outlets against overloads and short circuits, helping minimize downtime and equipment damage during faults.

With the Square D QO315, you’re choosing a trusted, purpose-built solution that delivers dependable protection, simple maintenance, and seamless compatibility with your existing QO panelboard investments. If you’re aiming for fast serviceability without sacrificing safety, this 15 A, 240 V, 3-pole plug-in breaker is designed to perform when it matters most.