Square D FA34070G 70A 3-Pole 480 V Circuit Breaker

Square D FA34070G 70A 3-Pole 480V Circuit Breaker is a purpose-built solution for robust 3‑phase protection in demanding electrical environments. With a 70 A rating and three live poles, this breaker is engineered to safely interrupt fault currents across all phases in systems operating at up to 480 V, helping minimize damage and downtime in industrial, commercial, and data-center applications.

• Current rating: 70 A
• Poles: 3
• Voltage rating: 480 V
• Part number: FA34070G
• Brand lineage: Square D, a trusted name in electrical protection

Designed for 3‑phase distribution, the FA34070G provides synchronized trip across all three poles, delivering reliable fault isolation that preserves equipment and reduces arc-flash exposure during maintenance. This makes it a strong choice for protecting feeders, motors, and other 3‑phase loads in industrial facilities, manufacturing lines, and HVAC systems that operate at 480 V.

Why choose this 3‑pole, 480 V breaker?

Beyond basic protection, the FA34070G is built to fit into compatible Square D panelboards and enclosure systems, ensuring straightforward installation and consistent performance within established electrical architectures. The three‑pole design is ideal for applications where balanced protection across all phases is essential, eliminating the risk of unprotected conductors during fault events.

Who benefits

Electrical engineers, facilities managers, and maintenance technicians working in facilities with 3‑phase 480 V distribution will appreciate the clarity of protection this device provides. It’s well suited for data centers, manufacturing floors, large HVAC installations, and commercial power centers where dependable 3‑pole protection matters most.

Practical considerations

When selecting this breaker, ensure your panel and system are rated for 480 V operation and that the enclosure accepts FA‑series 3‑pole devices. Verify connection torque specifications and conductors match the rated current and voltage to maintain safe, stable service. For extended reliability, pair with proper enclosure labeling and routine inspection as part of your electrical maintenance plan.