Square D | QGA221004 | Circuit Breaker | 100A | 2-Pole | 240V | 65kA

Square D QGA221004 is a 100A, 2-Pole, 240V circuit breaker designed for reliable overcurrent protection in maintenance, retrofit, and replacement projects. When compatibility matters, this exact part number is your best reference to ensure a correct fit in your Square D panel or enclosure.

Key specifications

• Amperage: 100A
• Poles: 2-Pole
• Voltage: 240V
• Interrupting rating: 65kA

Why choose this QGA221004 breaker? Its 65kA interrupting capacity provides a strong safety margin for higher fault currents, helping protect wiring and connected devices. The 2-pole design ensures both hot legs are simultaneously disconnected when tripped, which is essential for 240V circuits and safer shutdowns in mixed residential and light commercial environments. The 100A rating makes it suitable for sizable feeders and heavier-load circuits without unnecessary nuisance trips.

Practical use cases

• Retrofits and panel upgrades where an exact 100A, 2-Pole, 240V unit is required.
• Maintenance tasks on service panels or subpanels needing dependable, high-capacity protection.
• New installations that align with Square D QGA series compatibility, ensuring consistent protection across the system.

Important note: Confirm fit and ratings before ordering. The part number QGA221004 is the best reference to guarantee compatibility with your equipment. If you’re sourcing this breaker for an existing panel, double-check panel labeling and manufacturer documentation to ensure the 2-Pole 240V, 100A configuration is appropriate for your circuit.