Square D QOB290VH - 90 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Square D QOB290VH — a dependable 90 A, 240 V, 2-pole bolt-on molded case circuit breaker designed to protect your electrical system with precision and confidence. Built for reliable branch circuit overcurrent and short-circuit protection, it’s a staple for panelboards and load centers in residential, commercial, and light industrial settings.

Why choose the QOB290VH?

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection that stays put even in demanding environments, reducing movement that can lead to loose connections.
• Thermal-magnetic trip unit provides stable, repeatable protection against both overcurrent and short circuits, helping to prevent nuisance trips while guarding electrical circuits.
• OEM-compatible design works seamlessly with matching Square D load centers and panelboards for a reliable, compliant install with optimal fit and performance.
• Versatile applicability suitable for a wide range of installations—from home subpanels to light commercial and small industrial applications—where safe, fast interruption of fault currents is critical.

Key specifications at a glance

• Manufacturer: Square D
• Part number: QOB290VH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 90 A
• Voltage rating: 240 V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical applications and use cases

The QOB290VH is ideal for adding or upgrading protection in panelboards and load centers where a robust two-pole, 90 A solution is needed. Use it for:

• Subpanels in residential homes to safeguard essential circuits and feeders
• Light commercial panels supporting lighting, outlets, and small equipment loads
• Industrial control panels or service entrances in setups with moderate electrical demand

Because it’s designed to pair with matching OEM components, you’ll experience fewer compatibility surprises during installation and commissioning, helping you meet code requirements with confidence.

Installation and best practices

• Ensure your panelboard or load center is compatible with the QOB290VH’s bolt-on mounting and thermal-magnetic protection specifications.
• Follow manufacturer torque specifications for bolt-on mounting to maintain a secure, continuous electrical connection.
• Verify the circuit’s load and protection needs match the 90 A rating to avoid nuisance trips or insufficient protection.
• After installation, perform a standard functional test to confirm proper tripping behavior under simulated fault conditions.

Confidence in reliable protection

When you need a clean, durable solution that resists vibration and delivers consistent protection for branch circuits, the Square D QOB290VH stands out. It combines robust mechanical mounting, precise thermal-magnetic protection, and OEM-compatibility in a compact, cost-effective package—making it an intelligent choice for electricians focused on safety, reliability, and long-term performance.