HMDL3400 | Circuit Breaker | 400A | 3-Pole | 600V

Meet the HMDL3400 Industrial Circuit Breaker—an exact-match solution engineered for maintenance, retrofit, and replacement projects where precise specifications matter. Designed to keep critical 600V systems protected, this 3-pole breaker is built to slot into existing gear with minimal hassle and maximum reliability.

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V

Why this specific model matters

When you're updating or replacing protection in an industrial setting, exact specification matching is nothing less than essential. The HMDL3400 provides a guaranteed reference point for compatibility, reducing the guesswork that can lead to mismatches, downtime, or unsafe configurations. The part number itself is the strongest indicator of fit, so start with HMDL3400 to ensure you’re aligning with the existing system design and protection requirements.

Ideal use cases

• Maintenance on existing 600V, 3-pole circuits where proven compatibility is critical
• Retrofit projects that require aligning new protection with legacy panel boards and switchgear
• Replacement scenarios where you must match the original device’s amperage, pole count, and voltage

What problems it solves

• Prevents misfits that can cause system downtime or improper protection by ensuring exact spec alignment
• Streamlines procurement and reduces uncertainty with a clearly defined part reference
• Supports reliable protection in demanding industrial environments by adhering to a precise 400A, 3-pole, 600V profile

Practical guidance for ordering

Before purchasing, verify that your equipment rating matches 400A, 3-Pole, and 600V. The HMDL3400 is the best reference for compatibility, so use the part number as the primary check against your panel or switchgear specifications.