Square D QOU170 - 70 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Engineered by Square D and available from AmpState, the QOU170 delivers dependable branch-circuit protection in a compact, rugged package. This 70A, 120V, 1-pole bolt-on molded case circuit breaker is purpose-built for panelboards and load centers that demand a tough, long-lasting safeguard against overcurrent and short circuits.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight through equipment vibrations and panel movements, reducing retrofit hassles and maintenance calls.
• Thermal-magnetic trip unit combines precise thermal protection with instantaneous magnetic tripping for rapid response to short circuits, delivering stable, repeatable protection across varying loads.
• OEM panel compatibility designed to pair seamlessly with matching Square D loadcenters and panelboards, ensuring straightforward replacements and reliable performance in your existing infrastructure.
• Versatile, durable design suited for residential, commercial, and light industrial applications where a 70A, 120V protection device is required.

In real-world use, the QOU170 helps you prevent damage from overcurrent events while minimizing unnecessary trips during normal operation. The molded-case construction delivers solid insulation and rugged durability, making it a dependable choice for busy electrical environments where uptime matters.

Where to use the Square D QOU170

• Panelboards and subpanels in homes, offices, small retail spaces, and light manufacturing facilities
• Branch circuits feeding high-draw lighting, HVAC equipment, or motor loads that require robust protection
• Upgrades or replacements in existing Square D installations for predictable, OEM-consistent performance

Specifications at a glance

• Manufacturer: Square D
• Part Number: QOU170
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 70A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Upgrade your protection with a trusted Square D solution—the QOU170 delivers reliable performance, straightforward installation, and OEM-compatible integration for enduring electrical safety in a wide range of settings. Add it to your panel today and experience precise, durable protection that keeps systems running smoothly.