Square D QOB120VH1021 - 20A, 1-Pole, Circuit Breaker

Meet the Square D QOB120VH1021—a dependable 20A, 1-Pole circuit breaker engineered for demanding electrical environments. This single-pole design delivers focused protection for individual circuits, helping your panels stay safe and operational in busy installations.

Overview

Designed for flexible integration in panelboards, switchboards, and control panels, the QOB120VH1021 fits seamlessly into a wide range of industrial, commercial, and OEM setups. Its 20-amp rating provides precise overcurrent protection for branch circuits, preventing damage from overloads while enabling reliable, continuous operation in distribution panels and motor control centers.

Key specifications

• Current rating: 20A
• Poles: 1-Pole
• Breaker type: Circuit Breaker

Why it helps your system

The Square D QOB120VH1021 is purpose-built for environments where dependable overcurrent protection and safe operation are critical. Ideal for panelboards, switchboards, and control panels, this breaker keeps sensitive equipment safeguarded while supporting straightforward maintenance and replacement in both new installations and upgrades.

Use cases and applications

• Industrial panelboards where single-circuit protection is required for motors, sensors, or automation gear.
• Commercial distribution panels that demand robust, easy-to-service overcurrent protection.
• OEM equipment where a compact, reliable 1-pole breaker is needed to match existing Square D components.
• Motor control centers requiring consistent performance in demanding workloads.

Practical considerations

When planning a replacement or new build, the Square D QOB120VH1021 offers a straightforward path to reliable protection for a single circuit at 20 amps. Its design supports quick diagnostics and clean integration with other Square D devices, helping you maintain clear electrical zoning and safer, more manageable control panels.