Square D QGA221254 - 125 A, 2-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QGA221254—125 A, 2-Pole Plug-In Molded-Case Circuit Breaker. Engineered for dependable branch-circuit protection in panelboards and load centers, this device combines rapid plug-in installation with precise protective action to keep electrical systems safe and running smoothly.

• Fast plug-in connection enables quick installation and straightforward replacements in the field, reducing downtime during panel servicing or upgrades.
• Thermal-magnetic trip unit delivers stable, repeatable protection: the thermal element handles overloads for smooth, predictable response, while the magnetic element rapidly interrupts severe short circuits—minimizing heat buildup and potential damage.
• Two-pole, 125 A rating provides robust protection for multi-wire branch circuits, with clear visibility in panel schedules and easy integration into standard 2-pole spaces.
• Plug-in mounting design simplifies installation and removal in compatible Square D OEM panelboards and load centers, supporting reliable performance over time.
• OEM-compatible specifically engineered to work with matching Square D load centers and panelboards, ensuring consistent electrical characteristics and protection strategy.
• Versatile applications suited for residential, commercial, and light industrial environments where dependable overcurrent and short-circuit protection is essential.

Why this breaker matters

• Targeted protection for branch circuits: prevents electrical damage by rapidly clearing faults while maintaining service continuity for unaffected circuits.
• Durable, molded-case construction supports long-term reliability in everyday electrical installations and service calls.
• Clear, unambiguous protection rating and pole count (125 A, 2-pole) simplify panel documentation and troubleshooting.

Typical installation scenarios

• Upgrading or replacing a defective 2-pole breaker in a residential subpanel or small commercial panel.
• Adding or reconfiguring feeders in a load center where quick plug-in replacement minimizes downtime.
• Strategic protection for branch circuits in light industrial distribution panels that rely on reliable, consistent trip behavior.

Technical snapshot

• Manufacturer: Square D
• Part Number: QGA221254
• 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