Square D QO220 - 20A, Miniature Circuit Breaker (MCB)

The Square D QO220 is a compact 20A miniature circuit breaker (MCB) designed to deliver dependable overcurrent protection in demanding electrical environments. Built to integrate with standard Square D QO panelboards, it also suits switchboards, control panels, and OEM equipment, providing safe, reliable interruption when circuits exceed their rated current.

• Current rating: 20A — precise protection for circuits that power essential equipment and control systems.
• Breaker type: Miniature Circuit Breaker (MCB) — a reliable, resettable protection device that simplifies maintenance and reduces downtime after faults.
• Compatibility and fit — designed to install in standard Square D QO configurations, making it suitable for panelboards, switchboards, control panels, and OEM applications.
• Application breadth — ideal for industrial, commercial, and OEM environments where dependable overcurrent protection in distribution panels and motor control centers is critical.
• Durable, engineered performance — built to withstand routine electrical demand and provide consistent protection in busy electrical rooms.

Use cases include upgrading or repairing distribution panels, motor control centers, and control panels where a 20A, reliable MCB keeps circuits safe and downtime to a minimum. When you choose the Square D QO220, you’re selecting a proven component from the QO family that electricians trust for predictable trip characteristics and straightforward installation. Ensure compatibility with your panel, follow electrical codes, and engage a qualified professional for installation to maintain safe, compliant operation.