Eaton | HLDB3400W | Circuit Breaker | 400A | 3-Pole | 600V

Meet the Eaton HLDB3400W circuit breaker: a purpose-built solution for protection in demanding electrical systems. This 400A, 3-pole device is rated for 600V, making it a reliable choice for three-phase applications where robust current interruption and dependable performance are essential.

Key specifications at a glance:

• Amperage: 400A
• Poles: 3-Pole
• Voltage rating: 600V
• Reference for compatibility: Part number HLDB3400W

Why this model stands out

The HLDB3400W is designed for maintenance, retrofit, and replacement projects where exact specs matter. Instead of guessing compatibility, you can rely on the HLDB3400W part number as the best reference to ensure a precise match with your existing panel or distribution gear. This targeted compatibility helps you preserve original protection schemes and minimize downtime during upgrades or service work.

Ideal use cases

• Maintenance of three-phase distribution panels that require a 400A, 3-pole, 600V protective device
• Retrofits where panel wiring and bus configurations demand exact spec alignment
• Replacement installs in facilities updating electrical infrastructure while maintaining system integrity

What problems it solves

For facilities undergoing panel upgrades or service refreshes, the HLDB3400W provides a reliable, spec-matched protection solution that helps prevent unauthorized substitutions and compatibility issues. By sticking to the specified 400A, 3-pole, 600V parameters, you maintain consistent electrical protection across your distribution network and reduce the risk of mismatched components.

Practical considerations and tips

• Before ordering, verify that your panel, switchgear, or distribution board aligns with the 400A, 3-pole, 600V ratings and that HLDB3400W is the correct reference for your setup.
• Use the HLDB3400W part number as your primary compatibility check to avoid substitutions that don’t meet your system’s specifications.
• When planning a retrofit or maintenance install, have the existing protection scheme documentation on hand to confirm that this device will integrate with your current wiring and termination practices.

Designed for professionals who prioritize precision and reliability, the Eaton HLDB3400W circuit breaker delivers straightforward compatibility and solid performance in high-demand environments. It’s the practical, spec-focused choice for safeguarding three-phase, 600V systems where accurate replacement and maintenance are essential.