Square D QO320 - 20A, Molded Case Circuit Breaker

Meet the Square D QO320 — a 20A molded case circuit breaker designed to deliver dependable overcurrent protection where safety and uptime matter most. With a precise 20-amp rating, it responds to overloads and fault conditions to protect both equipment and personnel in your electrical system.

Designed for versatile integration, the QO320 is suitable for panelboards, switchboards, control panels, and OEM equipment. It is ideal for industrial, commercial, and OEM applications where dependable protection and safe operation are critical in distribution panels and motor control centers.

Key specifications

• Current rating: 20A
• Breaker type: Molded Case Circuit Breaker

Common applications

• Panelboards and distribution panels
• Switchboards and control panels
• OEM equipment assemblies
• Motor control centers where consistent protection is required

Why the QO320 stands out is its targeted protection for 20A circuits. It provides clear, predictable tripping behavior that helps isolate faults without unnecessarily interrupting other circuits. This makes it a reliable choice for systems where a single, well-defined circuit needs protection within larger electrical assemblies.

Practical usage notes: install by qualified personnel and ensure proper enclosure and mounting according to local codes and standards. Pair the 20A rating with the appropriate load and conductor sizing to maximize protection, performance, and safety in your distribution panels and motor control environments.