Square D QOB3150VH - 150A, 3-Pole, Circuit Breaker

The Square D QOB3150VH is a rugged 150A, 3-Pole circuit breaker designed for dependable overcurrent protection in demanding industrial, commercial, and OEM environments. Built for use in panelboards, switchboards, and control panels, this unit delivers reliable performance where safe operation and continuous uptime matter most.

• 150A current rating: provides robust protection for large feeders and motor circuits, helping prevent equipment damage and unplanned downtime.
• 3-Pole configuration: ideal for three-phase systems, simplifying integration into three-phase distribution setups without the need for additional adapters.
• Versatile mounting in multiple enclosures: suitable for panelboards, switchboards, and control panels, offering flexible deployment across various electrical architectures.
• Industrial-grade reliability: a trusted Square D solution engineered for consistent performance in challenging environments and critical control applications.
• OEM-friendly: designed with original equipment manufacturers in mind, enabling seamless incorporation into new equipment and turnkey installations.

Key use cases

• New installations in distribution panels and motor control centers where reliable overcurrent protection is essential
• Retrofit or replacement in existing Square D systems to maintain consistent protection levels
• OEM applications requiring a sturdy, maintenance-friendly 150A, 3-pole breaker that aligns with standard Square D panel configurations

Why this breaker stands out

• Focused on real-world protection needs: it guards feeders and three-phase loads against overloads and short circuits, supporting safer, longer-lasting equipment operation.
• Designed for fast, predictable performance in distribution panels and motor control centers, reducing the risk of cascading faults.
• Built to integrate smoothly with Square D systems, ensuring compatibility with enclosure types, bus configurations, and field-service procedures.

Practical tips for installation and use: verify that your panel or enclosure supports a 3-pole, 150A protector of this design, and confirm alignment with any OEM or code requirements for overcurrent protection. Pair this breaker with appropriately rated conductors, lugs, and bus accessories to maintain optimal protection and safety across your electrical distribution system.