Square D | Q221150AC | Circuit Breaker | 150A | 2-Pole | 240V

Square D Q221150AC Circuit Breaker is your OEM-grade solution for 240V systems, delivering dependable 150A protection in a compact 2-Pole design. Built for maintenance, retrofit, and replacement projects, this breaker helps keep panels performing as intended with minimal downtime.

• Amperage: 150 A
• Poles: 2-Pole
• Voltage: 240V

Important compatibility note: Confirm fit and ratings before ordering. The part number Q221150AC is the best reference for compatibility across Square D panels and configurations.

Why this Q221150AC is a smart choice for your electrical protection needs:

• OEM reliability — Designed and manufactured by Square D to match the original equipment’s performance, ensuring predictable protection characteristics and seamless integration with existing panel infrastructure.
• Retrofit-ready — Ideal for upgrading or replacing aging breakers in service panels, with a footprint and connection approach that aligns with standard Square D configurations.
• Practical applicability — Suitable for residential, commercial, or light industrial circuits that require robust 150A, 240V two-pole protection, helping to safeguard feeders and branch circuits.
• Clear compatibility guidance — Rely on the part number as the primary reference to verify exact fitment and ratings, reducing guesswork during procurement.

Use scenarios and tips for getting it right:

• When performing panel maintenance or upgrades, keep Q221150AC on hand as a direct replacement to minimize panel downtime.
• Before ordering, check your panel label and service panel model to ensure the Q221150AC aligns with your system’s amperage, voltage, and bus connection requirements.
• During installation, follow standard electrical safety practices and torque specifications for terminal connections to ensure reliable performance.

Whether you’re refreshing an aging panel, retrofitting to a higher load, or stocking parts for routine maintenance, the Square D Q221150AC 150A 2-Pole 240V circuit breaker delivers dependable protection with straightforward compatibility — backed by the assurance of the Square D legacy.