Square D QO370 - 70A, 3-Pole, Circuit Breaker

Square D QO370 is a dependable 70A, 3-Pole circuit breaker engineered for real-world three-phase systems. Designed to protect distribution panels, motor control centers, and control panels, this device delivers clear, reliable overcurrent protection where it’s needed most in industrial, commercial, and OEM applications.

• Three-pole configuration for true three-phase protection—perfect for motors, pumps, conveyors, and other three-phase equipment that demand coordinated protection.
• 70-amp rating provides robust, site-appropriate protection for moderate-load circuits while supporting safe startup and operation of connected equipment.
• Versatile installation in essential enclosures—suitable for panelboards, switchboards, and control panels, making it ideal for new builds, retrofits, or OEM assemblies.
• Built for reliability from Square D, a trusted name in electrical distribution, delivering consistent performance in demanding environments.

This breaker is a practical choice for anyone coordinating a three-phase electrical system where dependable protection and safe operation are critical. It’s especially well-suited for installations in distribution panels and motor control centers where standardized protection across multiple circuits simplifies maintenance and upgrades.

Key specifications at a glance

• Current rating: 70A
• Poles: 3-Pole
• Breaker type: Circuit Breaker
• Applications: panelboards, switchboards, and control panels; suitable for industrial, commercial, and OEM environments requiring reliable overcurrent protection

Whether you’re equipping a new panel, upgrading an existing distribution system, or standardizing protection across multiple control panels, the Square D QO370 delivers precise, three-phase protection with straightforward integration into your electrical infrastructure.