Square D | FAL340506139 | Circuit Breaker | 50A | 3-Pole | 480V

Designed by Square D for robust, reliable protection in industrial and commercial electrical systems, the FAL340506139 circuit breaker delivers precise 50-amp, 3-pole protection for 480V networks. Built to support maintenance, retrofit, and replacement projects, this unit helps you keep critical equipment—like motors, conveyors, and contactors—protected against overloads and short circuits in demanding environments.

• Key specifications at a glance: Amperage 50A; Poles 3-Pole; Voltage 480V; Part number FAL340506139. These specs define a unit that fits standard 480V three-phase distributions and provides dependable interruption capabilities aligned with Square D design standards.
• Exact-fit for critical replacements: When replacing aging or failed breakers in 480V systems, using the matched part number ensures correct physical fit, consistent trip characteristics, and seamless coordination with existing protection schemes.
• Ideal use cases: Maintenance outages, equipment retrofits, and panel upgrades in manufacturing floors, HVAC and pumping systems, or any facility with 480V three-phase service requiring dependable overcurrent protection at 50A.
• Why this matters: Directly referencing the part number provides the best compatibility reference, helping you avoid misfits that can lead to downtime. This breaker is chosen to align with your existing Square D panel and its bus connections, ensuring predictable performance and easier future service.
• Practical installation and care: Before ordering, confirm fit and ratings against your panel label and schematics. During installation, follow standard lockout/tagout procedures, torque specs from Square D guidelines, and verify that the panel’s 480V distribution and bus type are appropriate for a 3-pole device. Store spares in a clean, dry environment for rapid outages.
• Performance-focused design: While every installation varies, you gain consistent protection for 480V three-phase circuits, with the assurance of Square D engineering backing and compatibility with your existing protective coordination strategy.

Whether you’re replacing a failed breaker, provisioning for a retrofit, or stocking a reliable spare for planned maintenance, the Square D FAL340506139 50A 3-Pole 480V circuit breaker offers precise fitment, predictable protection, and peace of mind for your industrial power distribution. Use the part number as your primary compatibility reference to ensure a seamless match with your panel and downstream equipment.