Square D | QGA221751 | Circuit Breaker | 175A | 2-Pole | 240V | 65kA | Plug-In

Square D QGA221751 Circuit Breaker is a rugged, plug-in protection device engineered for demanding 240V circuits. This 2-pole breaker delivers 175A of continuous protection with a robust 65kA interrupting rating, making it a reliable choice for retrofit, maintenance, or replacement projects in compatible Square D panels.

Key features that matter in real-world setups

• Amperage: 175A — suitable for high-load applications and large-draw equipment.
• Poles: 2-Pole — protects both hot legs of a 240V circuit with a single device.
• Voltage: 240V — designed for standard 240V distribution systems in commercial and industrial environments.
• Interrupting rating: 65kA — substantial short-circuit protection to help guard downstream equipment and wiring.
• Mounting style: Plug-In — enables quicker swaps and easier retrofits in compatible panels, reducing downtime during maintenance or upgrades.
• Reference model: QGA221751 — using the part number as your compatibility reference is the most reliable way to match panels and listings.

Why this plug-in breaker stands out

For facilities that need dependable protection without complicated installations, the QGA221751 delivers a straightforward plug-in solution that fits into compatible Square D panels designed for QGA-series breakers. The 2-pole design ensures a solid, two-wire protection scheme for 240V circuits, while the high 65kA interrupting rating provides a generous margin for fault currents typical in industrial and commercial environments. By leveraging a plug-in format, technicians can perform precise replacements or upgrades without modifying bus bars or jumpering cables, helping you keep downtime to a minimum.

Ideal use cases

• Retrofit projects where existing equipment requires an upgrade to a 175A, 2-pole 240V protective device.
• Maintenance swaps in service panels that specify Square D QGA-series plug-in breakers.
• New installations in compatible panels that require robust protection for high-demand 240V circuits.
• Protection for large motors, HVAC equipment, or other substantial 240V loads in commercial facilities.

Compatibility and practical installation tips

Before ordering, confirm fit and ratings to ensure seamless compatibility with your panel. The QGA221751 is the best reference for compatibility—cross-check your panel’s listing to verify it accepts plug-in QGA breakers. When installing, follow standard electrical safety practices and, if in doubt, engage a licensed electrician. Keep a maintenance log entry for the replacement with the exact part number and rating for easy future reference.

What you gain with this circuit breaker

• Faster replacements in compatible panels thanks to the plug-in design, minimizing downtime.
• Reliable protection for high-demand 240V circuits with a strong fault-current interrupting capability.
• Clear, referenceable part number (QGA221751) that simplifies ordering and compatibility checks.