Square D | ILL34350 | Circuit Breaker | 350A | 3-Pole | 480V

The Square D ILL34350 circuit breaker is a rugged, purpose-built solution for demanding three‑phase power systems. With a 350A amperage rating, this 3‑pole device is engineered to protect heavy industrial and commercial loads operating at 480V, helping you prevent costly faults and downtime.

Designed for maintenance, retrofit, and replacement projects, the ILL34350 shines when you need a precise, reliable match to existing equipment. If your panel or distribution system requires a 350A, 3‑pole, 480V breaker, this unit is the dependable choice that aligns with your installation’s specifications.

• Exact compatibility reference: The part number ILL34350 is the best reference for ensuring a proper fit. Always confirm against your panel’s labeling and ratings before ordering.
• High-current, three-phase protection: A 350A rating in a 3‑pole configuration provides balanced protection across all phases, safeguarding motors, drives, and other heavy loads.
• 480V operation: Suited for standard commercial and industrial power systems, including manufacturing, processing lines, and large HVAC equipment.
• Maintenance-friendly retrofit: Designed to replace older or failed breakers in compatible Square D setups with minimal downtime and straightforward installation.

Ideal use cases

• Retrofits in industrial control panels where 480V three-phase protection is required
• Replacements for aging or malfunctioning 350A, 3‑pole breakers in commercial facilities
• Upgrades to support higher-load equipment in manufacturing environments without changing the overall panel architecture
• Preventive maintenance cycles for critical processes powered by 480V three-phase systems

Specifications at a glance

• Amperage: 350A
• Poles: 3‑Pole
• Voltage: 480V
• Part number: ILL34350

Important note: Confirm fit and ratings before ordering. The part number is the best reference for compatibility, ensuring your Square D panel or distribution system will accept this 350A, 3‑pole, 480V breaker without issue. If you’re planning a retrofit or replacement, this model provides a reliable path to restoring protection and minimizing downtime.