LAB3400N | Circuit Breaker | 400A | 3-Pole | 600V

The LAB3400N is a rugged industrial circuit breaker engineered for demanding 3‑phase electrical systems. With a 400A rating and a 3‑pole configuration, it provides reliable protection for power distribution networks at up to 600V. Designed for maintenance, retrofit, and replacement projects, this unit helps keep critical machinery running while ensuring safety and compliance with exact spec requirements.

Key specifications

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

Why this model stands out

• The LAB3400N is tailored for installations demanding precise ratings and pole configuration, reducing the risk of mismatched breakers in retrofit or replacement projects.
• Triple‑phase protection: A 3‑pole design ensures synchronized interruption across all three phases, supporting balanced protection for 3‑phase loads.
• Maintenance and retrofitting suitability: Specifically chosen for maintenance, retrofit, and replacement needs where matching specs is critical, helping you minimize downtime and compatibility concerns.

Ideal use cases

• Replacing aging or failed breakers in 3‑phase, 600V distribution panels
• Upgrading or retrofitting equipment in industrial facilities to restore proper protection margins
• Stocking spare parts for service crews managing critical 600V infrastructure

Compatibility and practical notes

Before purchasing, confirm fit and ratings to ensure seamless integration with your existing panel or distribution board. The part number LAB3400N serves as the most reliable reference for compatibility, aligning with specific panels, assemblies, and protection schemes designed for this model.

Best practices for installation and maintenance

• Always verify system voltage and current requirements match the 600V/400A specification prior to installation.
• Cross‑check panel labeling and documentation to ensure the 3‑pole configuration aligns with your phase layout.
• Handle with appropriate safety protocols and consult installation guidelines to maintain system integrity during replacements.
• Keep a spare LAB3400N on hand for proactive maintenance to reduce downtime during future service windows.