Square D QO245 - 45A, 2-Pole, Circuit Breaker

Meet the Square D QO245, a 45A, 2-Pole circuit breaker designed to deliver reliable overcurrent protection in demanding electrical environments. Its two-pole configuration ensures both live conductors trip together, providing safer operation for 240V circuits while safeguarding panelboards, switchboards, and control panels alike.

Why the QO245 stands apart

• Precise 45A protection tuned for branch circuits, feeders, and moderate motor loads within distribution panels and motor control centers.
• Dual-pole reliability interrupts both hot lines simultaneously, reducing the risk of unprotected return paths and promoting safer shutdowns in fault conditions.
• QO-series compatibility designed for quick, straightforward replacement in existing Square D installations, streamlining upgrades and maintenance.
• Durable, real-world construction built to perform in industrial, commercial, and OEM applications where dependable protection and safe operation are critical.

Ideal use cases

• Distribution panels and motor control centers in industrial facilities needing dependable two-pole protection for 240V circuits.
• Commercial panelboards requiring compact, reliable breakers that fit standard QO footprints.
• OEM equipment where a robust, easy-to-source 45A, 2-Pole solution supports push-in or plug-on installations.

What problems does it solve?

The QO245 provides precise overcurrent protection, helping to prevent wiring damage, component burnout, and electrical fires by swiftly interrupting current when faults occur. Its two-pole design ensures coordinated shutdown across both conductors, safeguarding equipment and improving protection for multi-wire circuits.

Practical guidance and insights

• Use in applications where simultaneous disconnection of both hot legs is essential for safety and code compliance.
• Choose this 45A, 2-Pole model when your panel or MCC requires a reliable protection point within the Square D QO family.
• Maintain compatibility with existing QO panels to minimize downtime during replacement or upgrades.

Specifications at a glance

Current rating: 45A • Poles: 2-Pole • Breaker type: Circuit Breaker