Square D QOU120 - 20A, 1-Pole, Circuit Breaker

Introducing the Square D QOU120 — a compact 20A, 1-pole circuit breaker designed to guard single‑phase circuits across demanding environments. Built for industrial, commercial, and OEM applications, this unit delivers dependable overcurrent protection in panelboards, switchboards, and control panels, helping you maintain safety and uptime where it matters most.

Core features and benefits

• Single‑pole design provides streamlined wiring for single‑phase circuits and compact panel layouts
• 20A current rating protects branch circuits, lighting loads, and small motor circuits without unnecessary disruption
• Rugged construction optimized for use in distribution panels and motor control centers
• Trusted Square D reliability that integrates smoothly with many Square D panel systems
• Versatile for a variety of environments — industrial facilities, commercial buildings, and OEM equipment

Ideal use cases

Use the QOU120 in panelboards, switchboards, and control panels where single‑phase protection is required. It’s well suited for: - Protecting lighting circuits, receptacle runs, and control circuits in commercial spaces - Safeguarding feeder and branch circuits in industrial panel installations - Providing safe, predictable interruption in motor control centers and OEM equipment

Why this matters

Overcurrent protection is essential for keeping conductors, devices, and people safe by interrupting fault currents quickly. The 20A rating balances protecting circuit integrity with avoiding nuisance trips on typical loads, while the 1‑pole form factor reduces panel depth and simplifies installation in tight spaces.

Tips for installation and compatibility

• Verify that the breaker is compatible with your panel model and mounting scheme before installation
• Observe proper torque on termination connections and follow your panel’s wiring practices
• Use in accordance with your electrical code requirements and safety standards