Square D QO2030 - 30 A, 120 V, 1-Pole Plug-In Circuit Breaker | AmpState

The Square D QO2030 is a 30A, 120V, 1-pole plug-in molded case circuit breaker engineered to protect your branches with precise, reliable tripping. Designed for fast installation in residential, commercial, and light industrial panelboards and load centers, it delivers dependable overcurrent and short-circuit protection where you need it most.

• Fast plug-in connection: get circuits protected quickly with a snap-in fit that simplifies installation and replacement in compatible panelboards.
• Thermal-magnetic trip unit: combines thermal overload sensing with magnetic short-circuit protection, delivering stable, repeatable performance and reducing nuisance trips for common wiring loads.
• OEM-ready compatibility: engineered to work with matching Square D OEM load centers and panelboards, ensuring proper fit, coordination, and reliability.
• Versatile application: ideal for protecting branch circuits in homes, small businesses, and light industrial environments—covering lighting, outlets, and small equipment circuits.
• Maintenance-friendly design: the plug-in style supports straightforward servicing and upgrades within existing panel configurations.

Technical Specifications

• Manufacturer: Square D
• Part Number: QO2030
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Use Cases & Why It Matters

For homeowners updating an older panel or electricians equipping a new install, the QO2030 delivers targeted protection where it’s needed most. Use it to safeguard a dedicated lighting circuit, a wall-outlet run, or a small appliance circuit in living spaces, offices, or retail spaces. Its plug-in design means quicker swaps during panel upgrades or part replacements, minimizing downtime and service interruptions.

Why Choose This Breaker

Choosing the QO2030 means selecting a breaker that aligns with the established Square D QO family—for consistent trip characteristics, predictable performance, and a trusted safety profile. The 1-pole, 30A configuration is ideal for circuits where a balance of protection and capacity is required, helping to prevent fires and equipment damage from overcurrent conditions while keeping nuisance trips in check for everyday loads.

Practical Tips

Ensure compatibility with your panel’s listing and bus type before replacement. When installing, verify the panel is powered off and follow standard electrical safety practices. The plug-in mounting simplifies service in existing installations, making upgrades or replacements straightforward without extensive rewiring.