Square D Q422300AB Circuit Breaker, 300A, 2-Pole, 240V

Meet the Square D Q422300AB circuit breaker — a rugged, reliable protection device engineered for demanding industrial electrical systems. With a 300 A rating and 2-pole design for 240 V circuits, this breaker delivers dependable overcurrent protection for service entrances, main distribution panels, and maintenance or replacement projects.

Built for industrial electrical service, the Q422300AB helps safeguard equipment, minimize downtime, and simplify upgrades. Its straightforward installation and consistent performance align with the needs of electricians, maintenance teams, and facility managers who value safety, reliability, and long-term value.

• Amperage and voltage: 300 A, 240 V, 2 poles designed to protect 240 V circuits and multi-wire feeders.
• Application: ideal for industrial service, control panels, and replacement installations where robust current protection is required.
• Compatibility: verify fit by part number Q422300AB and your specific application requirements.
• Ease of maintenance: a standard form factor and proven Square D engineering enables straightforward replacements and predictable performance across multiple panels.

Use cases include upgrading aging protection, adding dependable main protection in new builds, or performing routine maintenance on 240 V feeder circuits. This unit is part of the Square D family, ensuring consistent electrical characteristics and compatibility with other Square D components in the same system.

If you're unsure whether the Q422300AB fits your panel or application, send us a message and we'll help confirm compatibility and get you on the right part quickly.