Square D | QOU1401021 | Circuit Breaker | 40A | 1-Pole | 240V

Square D QOU1401021 is a focused solution for 240V circuits that demand dependable protection with precise settings. This 40A, 1-pole breaker is purpose-built for maintenance, retrofit, and replacement projects where exact specifications matter, ensuring your panel configuration remains consistent and compliant. Key advantages you’ll appreciate - Exact specification match: Part number QOU1401021 serves as the clearest reference for compatibility with Square D panels that support the QOU series. - Targeted overcurrent protection: 40-amp rating provides appropriate circuit protection for higher-load branch circuits on 240V, helping prevent wiring damage and reduce nuisance trips on normal operation. - Streamlined replacement path: When a replacement is required, this unit is designed to align with the original design intent, preserving trip characteristics and overall electrical safety in your installation. - Maintenance-ready: A practical choice for service calls, panel retrofits, or upgrades where you need a like-for-like component to minimize disruption. Ideal use scenarios - Maintenance and replacement: Swap in this breaker when an existing 40A, 1-pole 240V unit fails or wears out, restoring circuit protection quickly. - Retrofit and panel upgrades: Use in compatible Square D panels during renovation projects where a 40A 1-pole device is specified. - New install considerations: Suitable for new builds or reconfigurations that require a 40A, 240V single-pole breaker within the QOU family. What to know before you buy - Verification matters: Confirm fit and ratings before ordering. The best reference for compatibility is the part number itself—QOU1401021. - Brand and compatibility: This is a Square D component designed to work within panels that accommodate the QOU series, so check your panel labeling to ensure a proper match. Technical snapshot - Amperage: 40A - Poles: 1-Pole - Voltage: 240V - Part number: QOU1401021 - Brand: Square D - Series: QOU In practice, this circuit breaker delivers reliable protection for 240V branch circuits in residential or light commercial settings where a 40A, 1-pole device is appropriate. With its exact part number as your compatibility anchor, you can proceed with confidence in installations, replacements, and panel refreshes that require a precise, like-for-like component.