Square D QGA221252 - 125 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

Engineered by Square D, the QGA221252 is a 125 A, 240 V, 2-pole plug-in molded case circuit breaker designed for reliable branch-circuit protection in panelboards and load centers. Built for fast, straightforward protection, it delivers dependable overcurrent and short-circuit safeguards with a plug-in design that simplifies installation and replacement.

• Fast plug-in connection — a quick, tool-friendly installation that reduces downtime during panel upgrades, maintenance, or breaker replacement.
• Thermal-magnetic trip unit — delivers stable, repeatable protection by reacting to both overloads and short circuits, helping prevent nuisance trips and equipment damage.
• 2-pole, 240 V configuration — ensures simultaneous disconnection of both hot legs for safer, code-compliant protection of multi-wire circuits.
• 125 A rating — suitable for higher-load branch circuits within residential, commercial, and light industrial applications.
• OEM compatibility — designed to fit and work seamlessly with matching Square D load centers and panelboards for reliable operation and streamlined maintenance.
• Versatile application — ideal for protecting critical distribution paths in homes, small businesses, and light industrial spaces where consistent protection matters.

Technical at a glance

• Manufacturer: Square D
• Part Number: QGA221252
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Voltage Rating: 240 V
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical scenarios:

• Upgrading or replacing a failed breaker in Square D panelboards where a 125 A, 240 V, 2-pole unit is required.
• Enhancing electrical safety for multi-wire branch circuits in residential service panels or small commercial distribution centers.
• Installing a quick-switch solution during panel maintenance that minimizes wiring work while preserving OEM compatibility.

Why choose the QGA221252? It combines a robust thermal-magnetic trip mechanism with a plug-in design that simplifies service, while its 125 A rating and 240 V capability ensure it can handle higher-demand circuits without compromising protection. When reliability, ease of installation, and OEM compatibility matter most in your panelboards and load centers, this Square D breaker delivers consistent performance and peace of mind.