Square D | QOB320EPD | Circuit Breaker | 3-Pole | 10kA | Bolt-On

Secure, reliable protection for your 3‑phase electrical system starts with the Square D QOB320EPD. This 3‑pole, 10 kA bolt‑on circuit breaker is designed for demanding commercial and industrial panels that require a durable, proven protection device within the QOB family. When you need a replacement, retrofit, or maintenance solution that matches exact Square D specifications, this part delivers consistent performance and compatibility.

• 3-Pole configuration—protects all three phases in your 3‑phase circuits, ideal for motors, HVAC equipment, and other 3‑phase loads.
• Bolt-On mounting—secure, vibration‑resistant installation that simplifies field service and minimizes panel disruption.
• 10 kA interrupting capacity—robust fault current handling for enhanced protection in higher‑demand environments.
• QOB series compatibility—designed to pair with Square D panels that accept QOB bolt‑on breakers, ensuring a reliable fit in compatible systems.
• Compact, practical form factor—engineered to integrate neatly into standard Square D distribution panels without sacrificing protection or performance.

Compatibility and configuration matters — before ordering, confirm the breaker’s fit and ratings for your specific panel. The QOB320EPD part number is the best reference to ensure you’re selecting the exact match your enclosure requires.

Use cases and real‑world applications

This breaker is an excellent choice for:

• Maintenance and replacement in existing Square D installations that support QOB bolt‑on devices.
• Retrofit projects where upgrading to reliable, standardized protection for 3‑phase circuits is needed.
• New installations in panels that are designed to accept QOB bolt‑on breakers, providing consistent protection for motors, compressors, and other 3‑phase equipment.

Why choose this model? It combines the trusted reliability of Square D with a mounting approach that streamlines serviceability and a high interrupting rating that equips your system to respond to fault conditions quickly. For technicians and electrical engineers focused on dependable panel protection, the QOB320EPD offers a precise, field‑tested solution tailored to QOB‑compatible Square D panels.

Tip: when planning a retrofit or replacement, map your panel labeling to the QOB family and reference the exact part number (QOB320EPD) to avoid compatibility pitfalls. This precise alignment helps ensure you’re protecting the right circuits with the right device, every time.