Square D A1L290 Circuit Breaker, 90A, 2-Pole, 240V

Meet the Square D A1L290 circuit breaker—a rugged, 90A two-pole device designed for industrial electrical service, maintenance, and replacement projects. Built as part of the trusted A1L series, this 240V breaker delivers reliable overload and short‑circuit protection for demanding environments, helping keep feeders and control circuits running smoothly.

Why the A1L290 stands out

• Precise 90 A protection for 240V circuits, balancing safety with service continuity in high-demand applications.
• Two-pole configuration ensures balanced protection across both legs of 240V systems, simplifying wiring and reducing nuisance trips.
• Industrial-grade reliability designed to withstand the rigors of commercial and manufacturing settings where downtime isn’t an option.
• A1L series compatibility means it fits a wide range of Square D enclosures and distribution panels commonly used in field service and upgrades.
• Part number verification for compatibility—verify fit by part number (A1L290) and application requirements to ensure a seamless replacement or upgrade.

Ideal use cases

• Replacement of aging or failing breakers in industrial panels
• New service installations and panel upgrades in factories, warehouses, and processing facilities
• Protection of essential 240V feeders, motors, and control circuits in demanding environments
• Maintenance projects where a reliable, field-friendly 2-pole breaker is required

Key specifications at a glance

• Product type: Circuit Breaker
• Series: A1L
• Part number: A1L290
• Amperage rating: 90 A
• Poles: 2
• Voltage rating: 240 V

Notes: Verify fit by part number and application requirements. If you’re unsure about compatibility with your panel or need help matching the right part number, send us a message and we’ll assist you in confirming a precise fit for your system.