Square D | Q1L290 | Circuit Breaker | 90A | 2-Pole | 240V

Square D Q1L290 Circuit Breaker — a robust 90A, 2-Pole, 240V protection device engineered for reliability in compatible Square D panels. Designed for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker helps keep electrical systems safe and compliant.

• Amperage: 90A
• Poles: 2-Pole
• Voltage: 240V

Notes: Confirm fit and ratings before ordering. The Q1L290 part number is the best reference for compatibility across Square D panels and accessories, ensuring proper fit, trip characteristics, and safe operation.

Why this model stands out

Choosing a two-pole 240V breaker with a 90A rating provides coordinated protection for multi-wire branch circuits and higher-demand feeders. The Q1L290 is designed to match the form factor and electrical characteristics of Square D panels that accept the Q1L series, reducing installation guesswork and potential compatibility issues.

Ideal use cases

• Replacing a failed or outdated breaker in Square D panels that accept Q1L-style units
• Retrofit projects where existing equipment requires exact Q1L290 specifications
• Maintenance tasks for 240V circuits that require higher protection than lower-amperage breakers

Practical installation considerations

Before replacement, shut off main power and verify the circuit is de-energized. Ensure the breaker seats firmly in the panel’s bus stabs for reliable operation. Use the Q1L290 part number as your compatibility reference to avoid mismatches and ensure safe, code-compliant performance.