Eaton LD3300C - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Eaton LD3300C — a 300A, 600V, 3-pole molded case circuit breaker engineered to protect your panelboards and loadcenters. This breaker is designed for dependable branch circuit overcurrent and short-circuit protection, delivering reliable performance in demanding residential, commercial, and light industrial applications.

• Compact molded-case design minimizes footprint, freeing valuable panel space and simplifying wiring within crowded load centers.
• Thermal-magnetic trip unit provides stable, repeatable protection by quickly responding to short circuits while calmly handling overloads.
• 3-pole configuration supports 3-phase systems, enabling coordinated protection across all phases.
• 300A, 600V rating handles high-current branch circuits safely in a wide range of installations.
• OEM-compatible designed to pair with matching Eaton OEM load centers and panelboards for reliable, straightforward replacements or upgrades.
• Applications ideal for residential, commercial, and light industrial environments where heavy-duty protection is needed.

Why choose the LD3300C for your electrical protection

The LD3300C goes beyond a simple trip device. Its thermal-magnetic mechanism delivers real-world protection that stays consistent across temperature changes and varying load conditions. By using a three-pole design in panelboard configurations, you ensure balanced protection and simplified wiring with a single device.

Common use cases

• Upgrading existing panelboards where a high-current, three-pole protection device is required
• Feeding commercial equipment with three-phase power while maintaining clean, organized panel layouts
• Replacing aging breakers in residential or light industrial installations where reliable short-circuit protection is essential

Technical snapshot

• Manufacturer: Eaton
• Part number: LD3300C
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 300A
• Voltage rating: 600V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Installation and best practices

• Ensure compatibility with your panelboard’s OEM family; verify mounting and connection standards before installation.
• Power down the system and follow proper lockout/tagout procedures during replacement or installation.
• Mount securely, connect conductors per manufacturer guidelines, and label the circuit for easy maintenance.