Square D FC340301021 30A 3-Pole 480 V Circuit Breaker

Meet the Square D FC340301021 30A 3-Pole 480 V Circuit Breaker — a purpose-built protector for demanding industrial power systems. Engineered to safeguard three-phase loads in 480 V environments, this 30-amp breaker delivers reliable interruption across all three conductors, helping keep motors, feeders, and equipment safe from overloads and faults.

Designed for real-world electrical environments, the FC340301021 integrates seamlessly with Square D panel boards and enclosures, offering a straightforward replacement option for existing installations that use the same model. Its 3-pole configuration ensures balanced protection across phases, which is essential for consistent motor performance and extended equipment life in 3-phase networks.

• Part Number: FC340301021
• Current Rating: 30 A
• Poles: 3
• Voltage Rating: 480 V

Ideal use cases

• Protect 3-phase motor feeders and industrial equipment in 480 V systems (pumps, conveyors, fans, compressors)
• Replacement option for existing Square D installations requiring FC340301021
• Feeder protection in commercial or light-industrial panels where dependable, coordinated trip across all phases is needed

What makes this breaker stand out

• Three-pole design provides synchronized protection across all phases, reducing the risk of phase imbalance and equipment damage
• Square D reliability and compatibility simplify procurement, stocking, and field maintenance
• Solid construction suited for industrial environments, delivering consistent performance under normal switching and thermal cycling

Practical guidance for installation and use

• Verify panel compatibility by confirming the part number FC340301021 and ensuring the breaker type matches your system requirements
• Follow manufacturer wiring and torque guidelines to ensure secure connections and reliable operation
• Keep an on-hand spare FC340301021 to minimize downtime in critical industrial applications