Square D KCL342251021 225A 3-Pole 480 V Circuit Breaker

Square D KCL342251021 225A 3-Pole 480 V Circuit Breaker is a rugged, three‑phase protection device crafted for demanding industrial power distribution. Engineered to handle larger loads in 480V environments, this unit delivers reliable interruption protection for feeders, motors, and other critical equipment in commercial and manufacturing settings.

Why this 225A, 3-Pole breaker stands out

With a 225‑amp current rating and a 3‑pole configuration, this Square D circuit breaker provides synchronized protection across all three phases of your 480V system. The result is tighter control of fault currents, minimized risk of phase imbalance, and reduced downtime due to nuisance trips on medium-to-heavy load circuits. The KCL342251021 is purpose-built for installations where robust, consistent performance matters, making it an excellent choice for mid‑ to large‑sized distribution panels and industrial feeders.

Key specifications

• Current rating: 225 A
• Poles: 3
• Voltage rating: 480 V
• Part number: KCL342251021
• Brand: Square D

Ideal applications and use cases

Designed for 3‑phase 480V power distribution, this breaker is well suited for:

• Main feeders in industrial distribution panels where 480V systems drive large motors and equipment
• Motor control circuits for conveyors, pumps, fans, and processing machines
• Upgrade or replacement in facilities moving to higher‑capacity, reliable protection for critical loads

How it compares and why it matters

Compared with smaller or single‑phase protection options, the 225A 3‑pole configuration offers more precise control for multi‑phase loads. The 480V rating aligns with standard industrial power rails, enabling safer switching under heavy loads. Choosing this model helps ensure continuity of service in busy facilities while maintaining strong fault protection across all phases—an essential consideration for uptime and equipment longevity.

Practical installation and care tips

• Verify panel compatibility with the KCL family and confirm that a 3‑pole, 480V device matches your distribution setup.
• Consult the panel’s labeling and follow the manufacturer’s installation torque and wiring guidelines to ensure secure connections.
• Inspect during installation for any signs of damage or shipping wear; replace if any concerns are found.
• Keep spare units in a clean, dry location to minimize corrosion and corrosion-related contact issues over time.

In short, the Square D KCL342251021 225A 3-Pole 480 V Circuit Breaker is a purpose-built solution for robust, reliable protection in industrial 480V networks. Its precise 225A rating and three‑phase design help you safeguard critical equipment, reduce downtime, and maintain steady, safe power delivery across demanding environments.