LAB3400W | Circuit Breaker | 400A | 3-Pole | 600V

When your industrial electrical system demands reliable protection, the LAB3400W circuit breaker is built to perform. This 400A, 3-pole unit is engineered for demanding environments where three-phase protection and high-voltage readiness matter, making it a dependable choice for maintenance, retrofit, and replacement projects.

Key specifications

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

Why this LAB3400W breaker stands out

The LAB3400W is more than just a number on a label. Its exact part-number specification serves as your strongest compatibility anchor, ensuring you aren’t guessing when swapping in a replacement or planning a retrofit. For technicians and engineers who rely on precise matching in panelboards and switchgear, this unit delivers clear, unambiguous reference points that streamline procurement and installation.

Ideal use cases

• Maintenance: Keep your electrical distribution running smoothly by replacing worn or failing breakers with a unit that matches your original specs.
• Retrofit: Upgrade protection in existing systems where a 400A, 3-pole, 600V rating is required to meet updated safety or load requirements.
• Replacement: When a like-for-like swap is necessary, rely on the LAB3400W as the definitive reference for compatibility to minimize downtime and rework.

Installation and compatibility guidance

Before purchasing, verify fit and ratings to ensure seamless integration with your panelboard or switchgear. Use the LAB3400W part number as your primary compatibility reference to confirm electrical and mechanical fit within your specific installation. If your schematic or service documentation lists a 400A, 3-pole, 600V breaker, you’re very likely aligned with this unit.

What you can expect in practice

With the LAB3400W installed, you gain dependable overcurrent protection for three-phase circuits operating up to 600V. This translates to improved system reliability, safer startup/shutdown cycles, and clearer maintenance planning—especially in facilities that rely on precise, well-documented component matching. By prioritizing exact specs and a clear compatibility reference, this breaker helps you reduce guesswork and streamline procurement, maintenance, and upgrades.