Square D QBA221252 - 125 A, 2-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QBA221252 — a 125 A, 2-Pole Plug-In Circuit Breaker crafted to deliver dependable branch circuit protection for panelboards and load centers. Built for quick installations and reliable performance, it’s a smart, long-term choice for residential, commercial, and light industrial electrical systems.

Why this breaker stands out

• Fast plug-in connection for rapid installation and hassle-free replacements, minimizing downtime during panel upgrades or service calls.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding promptly to overloads and short circuits, helping safeguard wiring and connected equipment.
• OEM-compatible design works with matching load centers and panelboards, ensuring clean interfaces and safer, secure connections.
• 2-pole configuration protects two conductors simultaneously, ideal for 240V circuits and balanced electrical loads in modern panels.
• 125A rating is well-suited for main feeders and sizable branch circuits in a range of applications—from homes to light commercial spaces.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: QBA221252
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

This plug-in breaker is especially practical for electricians and facilities managers who need reliable, easy-to-install protection in panelboards and load centers. Use it for:

• Replacing a failed or aging 2-pole breaker in existing panelboards
• Upgrading panel capacity or reorganizing circuits in residential or light commercial settings
• Installing or upgrading main feeder protection in new construction projects

What you gain with the Square D QBA221252

Beyond basic protection, this breaker offers predictable trip performance, straightforward maintenance, and broad compatibility with OEM panels. By choosing a trusted Square D component, you’re investing in durable construction, reliable operation, and a plug-in solution that keeps your electrical system running smoothly now and into the future.