Square D | QOB120AS | Circuit Breaker | 1-Pole | 120V | Bolt-On

The Square D QOB120AS 1-Pole 120V Bolt-On Circuit Breaker is built for reliability in maintenance, retrofit, and replacement projects where matching specs matters. Designed to protect a single hot leg in 120-volt circuits, this breaker helps safeguard appliances, lighting, and outlets from overloads and short circuits.

Why this breaker stands out

• 1-Pole, 120V design: Perfect for protecting individual branch circuits in residential and light commercial panels.
• Bolt-On mounting: Provides a secure, durable connection to compatible panels, helping maintain consistent electrical contact over time.
• Genuine part reference: Part number QOB120AS offers a precise compatibility reference for your panel and replacement needs.
• Clear applicability: Ideal for maintenance, retrofit, and replacement tasks where the exact specifications are required.

How to use it effectively

• Use in panels that accept bolt-on style breakers and require a 1-pole, 120V solution.
• Before purchasing, confirm fit and ratings to ensure seamless compatibility with your existing Square D setup. The part number is your best reference for matching components.
• Maintain electrical safety by selecting a breaker that matches the panel’s maximum voltage and the circuit’s current requirements.

Who this is for

• Electrical professionals performing panel maintenance, retrofits, or replacements in residential or small commercial environments.
• Anyone seeking a reliable, manufacturer-approved 1-pole 120V breaker that aligns with Square D system specifications.

Practical considerations

• Compatible with bolt-on installation; verify your panel’s mounting style before ordering.
• Keep the part number (QOB120AS) handy as the most reliable reference for compatibility and future replacements.

Specification snapshot

• Poles: 1-Pole
• Voltage: 120V
• Mounting: Bolt-On
• Brand/Part: Square D, QOB120AS

In brief, the QOB120AS is a purpose-built solution for single-circuit protection that emphasizes secure mounting, precise compatibility, and straightforward replacement in bolt-on panel configurations. If your project calls for a dependable, genuine Square D 1-pole 120V breaker, this unit delivers the right fit and performance for safe, long-lasting operation.