Eaton | HLDB3300Y | Circuit Breaker | 300A | 3-Pole | 600V

The Eaton HLDB3300Y is a purpose-built circuit breaker designed for demanding, three-phase electrical systems. With a 300 amp rating and three poles, this unit delivers precise protection for high-current feeders while operating at up to 600 volts. It’s the practical choice for maintenance, retrofit, and replacement projects where exact specifications matter, ensuring you stay aligned with your existing Eaton infrastructure.

Key specifications

• Amperage: 300 A
• Poles: 3-Pole
• Voltage: 600 V
• Part number: HLDB3300Y
• Intended use: maintenance, retrofit, and replacement where matching specs are required
• Compatibility note: Confirm fit and ratings before ordering. Part number is the best reference for compatibility.

Why choose HLDB3300Y for your electrical system

Designed to integrate seamlessly with existing Eaton components, the HLDB3300Y provides reliable protection for three-phase circuits at a robust 300 A, helping to prevent damage from overloads and short circuits. By sticking with the same part number in your panels, you reduce the risk of fit or performance discrepancies that can occur with non-matching replacements.

Ideal use cases

• Replacing failed breakers in industrial control panels that require 3-pole protection and 600 V rating
• Retrofits where a 300 A, 3-pole, 600 V specification match is essential for system continuity
• Maintenance scenarios that demand exact part compatibility to minimize downtime

Practical guidance for deployment

Before ordering, verify your panel model and bus configuration to ensure HLDB3300Y is the correct fit. Because the part number is the most reliable reference for compatibility, cross-check the exact Eaton specification against your panel labeling. Keeping a HLDB3300Y on hand can streamline replacements and reduce downtime during critical maintenance windows.

With its precise specs and Eaton-aligned design, the HLDB3300Y stands out as a dependable, straightforward solution for protecting high-current, three-phase circuits while preserving system fidelity and ease of maintenance.