Square D | QOB120EPD2100 | Circuit Breaker | 20A | 1-Pole | 120V

Meet the Square D QOB120EPD2100 circuit breaker — a precise, ready-to-install 1-pole device engineered for 120V circuits. With a 20A rating, it’s designed for maintenance, retrofit, and replacement tasks where exact specs matter, helping restore panel reliability quickly and confidently.

• Amperage: 20A
• Poles: 1-Pole
• Voltage: 120V
• Part number: QOB120EPD2100 — the best reference for compatibility

Why choose this breaker? Its QOB120EPD2100 designation signals exact compatibility with Square D panels that support the QOB-family style breakers, making it a reliable choice for replacements and upgrades. Using the exact part number helps you avoid guesswork and ensures the breaker matches the panel’s electrical characteristics and physical fit.

Ideal use cases

• Replacing a failed or tripped breaker in residential or light commercial panels that require a 1-pole, 20A, 120V device
• Retrofit projects where adding or rebalancing circuits calls for a precise 20A, single-pole solution
• Maintenance workflows that demand fast, point‑and‑play compatibility with existing Square D electrical systems

What to check before you buy

• Confirm fit and ratings using the exact part number: QOB120EPD2100
• Verify your panel model supports the QOB-series configuration and 120V, 20A, 1-pole format
• Ensure the circuit you’re protecting aligns with a 20A threshold to prevent nuisance trips and maintain safety

Installation notes for a smooth retrofit or replacement: shut off the main power, remove the old breaker, align the new QOB120EPD2100 with the existing bus connection, and secure it firmly. If you’re unsure about panel compatibility, rely on the part number as your primary reference to minimize misfits and ensure continued electrical safety.