Square D QBA221252 125A 2P 240V Circuit Breaker, Plug-On | AmpState

Meet the Square D QBA221252 125A 2P 240V Plug-On Circuit Breaker, available through AmpState for dependable protection across panelboards, load centers, and electrical distribution systems. This device is purpose-built for retrofit work and maintenance planning where keeping the exact part number in service matters.

The QBA221252 is a two-pole, 240-volt circuit breaker designed to interrupt fault current and shield downstream circuitry from overloads. Its plug-on design simplifies installation, enabling quicker replacements and reducing panel disturbance during service upgrades. Built to meet the needs of modern electrical distributions, it fits cleanly into compatible Square D panelboards and load centers, helping you maintain consistent protection without rewiring or complex mounting.

Key specifications at a glance

• Manufacturer: Square D
• Part number: QBA221252
• Product type: Circuit Breaker
• Amperage: 125 A
• Poles: 2
• Voltage: 240V
• Design: Plug-On
• Availability: AmpState

Why this plug-on breaker matters in real-world work

• Rapid retrofit capability: The plug-on format minimizes panel downtime during replacement or upgrades, so you can restore protected circuits faster.
• Reliable protection for medium-to-high load circuits: With a 125 A rating, it’s suited for feeders and branch circuits that require robust interruption capability in commercial and residential distributions.
• Precise compatibility for planning and documentation: Retaining the exact part number (QBA221252) simplifies maintenance records, warranty considerations, and future replacements.
• Integration with Square D systems: Engineered to work with standard Square D panelboards and load centers, supporting consistent electrical distribution across your facility.

Ideal use cases

• Retrofits in existing panelboards where the old breaker type is still in use and part-number consistency is required for service manuals or drawings.
• Preventive maintenance planning for facilities that rely on predictable, readily sourced components from Square D.
• Replacement of failed or aging breakers in electrical distribution circuits, ensuring continued protection without reconfiguring bus routing.
• New installations in configurations that demand a straightforward plug-on solution for quick commissioning.

If you’re unsure about fit, remember: need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Choosing AmpState means access to the Square D QBA221252 with knowledgeable support for compatibility checks, timely availability, and guidance through your retrofit or maintenance project. This breaker delivers reliable protection, streamlined installation, and a path to consistent, well-documented electrical distribution across your panelboards and load centers.