Square D QO240 - 40A, 2-Pole, Circuit Breaker

The Square D QO240 delivers dependable overcurrent protection in a compact, 2-pole package designed for 240V circuits. With a 40A rating, this circuit breaker provides precise, reliable interruption to keep distribution panels and connected equipment safe in demanding industrial, commercial, and OEM environments.

• 2-Pole design supports 240V circuits and simplifies wiring in panelboards, switchboards, and control panels, reducing enclosure clutter while maintaining strong fault protection.
• 40A current rating guards feeders, motors, and power distribution lines from overloads and short circuits, helping to minimize downtime and equipment damage.
• QO series compatibility integrates with standard Square D QO panels for straightforward installation and predictable trip characteristics that installers trust.
• Versatile for multiple applications ideal for industrial facilities, commercial buildings, and OEM equipment where reliable, immediate protection is critical in distribution panels and motor control centers.

Practical use cases you can rely on include protecting motor feeds in control panels, safeguarding branch circuits in commercial switchboards, and providing staged protection in OEM assemblies. The QO240 is a smart choice when you need a dedicated 40A, 2-pole breaker that combines ease of installation with robust performance under a variety of operating conditions.

Key advantages in real-world terms: quick, decisive tripping when current exceeds safe levels, compatibility with existing QO infrastructure, and a design that supports organized, safe, and compliant electrical assemblies. For professionals building or upgrading distribution systems, the QO240 offers a focused, reliable solution for protecting essential loads without overcomplicating the panel.