Square D QOB315 - 15A, 240VAC, 3-Pole, Circuit Breaker

Meet the Square D QOB315 - a rugged 15A, 240VAC, 3-Pole circuit breaker built for the heavy-duty demands of modern electrical distribution. Designed to deliver reliable overcurrent protection in panelboards, switchboards, and control panels, this breaker keeps three-phase systems safe and productive.

Key advantages:

• Current rating: 15A at 240VAC to handle standard three-phase loads without over-tripping; ideal for protecting motors, heaters, and control circuits in commercial and industrial environments.
• Poles: 3-Pole configuration that guards three hot legs in 3-phase networks, simplifying wiring and reducing panel clutter.
• Versatile integration: Compatible with panelboards, switchboards, and control panels that accept this 3-pole Square D design—supporting distribution panels and motor control centers.
• Reliability in demanding applications: Engineered for OEM, industrial, and commercial use where dependable protection and safe operation are critical.

Use cases and scenarios:

• Protect three-phase machinery on manufacturing lines, conveyors, and rotary equipment in equipment rooms.
• Guard HVAC fan and pump motor circuits in commercial buildings.
• Integrate into motor control centers and distribution panels to streamline protection across multiple loads.

Why choose the QOB315 over other breakers? Its three-pole design concentrates protection for three-phase circuits, reducing wiring complexity and ensuring consistent trip characteristics across all phases. It’s a practical, ready-to-install solution for professionals who value reliability and compatibility within the Square D ecosystem.

Practical notes for installation and maintenance: confirm that your panel is rated for 240V and accepts 3-pole breakers, verify the enclosure and bus compatibility, and keep spare QOB315 units on hand for quick replacements to minimize downtime.