Square D | FCJ34040 | Circuit Breaker | 40A | 3-Pole | 480V

The Square D FCJ34040 circuit breaker is a sturdy, purpose-built solution for 480V, three‑phase electrical systems. With a 40A rating across 3 poles, this device provides reliable overload and short‑circuit protection for industrial panels and feeders, making it ideal for maintenance, retrofit, and replacement projects where exact specifications matter.

• Key specs at a glance: 40A, 3-Pole, 480V AC – designed to protect 3‑phase circuits in demanding environments.
• Best compatibility reference: Use the part number FCJ34040 as the definitive reference to ensure you’re selecting the exact device that matches your panel’s requirements. Confirm fit and ratings before ordering.
• Ideal for maintenance, retrofit, and replacement: Quickly restore trusted protection in existing 480V installations, upgrade legacy panels, or swap out a failed breaker without overhauling your distribution system.
• Reliability from a trusted name: Square D engineering brings proven performance to industrial electrical protection, supporting consistent operation in 3‑phase 480V networks.
• Clear use cases: Perfect for replacing a worn or damaged 3‑pole 40A breaker in a 480V panel, retrofitting circuits to meet new load demands, or installing a dependable 40A feeder protection in new or renovated facilities.
• Practical installation guidance: Before purchasing, verify that FCJ34040 matches your panel model and configuration to ensure compatibility with the exact bus and frame design used in your distribution setup.

With the FCJ34040, you gain precise, dependable protection for critical equipment in manufacturing floors, processing plants, and other industrial environments. Its 40A rating and 3‑pole configuration are tailored for balanced, three‑phase loads, helping minimize downtime and protect motors, drives, and other equipment connected to 480V systems.