LAB3400K | Circuit Breaker | 400A | 3-Pole | 600V

The LAB3400K is a purpose-built industrial circuit breaker engineered for reliability in maintenance, retrofit, and replacement projects where exact specifications matter. This 400A, 3-pole device provides solid protection for three-phase electrical systems at up to 600V, helping keep critical equipment and processes safe and uninterrupted.

Key specifications at a glance

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

Why this LAB3400K stands out

Designed to align with standard industrial breakers, the LAB3400K minimizes troubleshooting and compatibility issues during upgrades. Its 3-pole configuration ensures balanced protection across all three phases, which is essential for maintaining performance in motors, conveyors, pumps, and other three-phase loads. By matching these exact specs, you reduce the risk of under- or over-protection that can complicate service and lead to downtime.

Ideal use cases

• Maintenance on aging or aging-out electrical panels where standard replacements are required.
• Retrofit projects where upgrading to a higher or more reliable protection scheme is planned without changing the panel’s footprint.
• Replacement scenarios for systems that demand a 400A, 3-pole, 600V protection device with predictable performance.

Important compatibility note

Before ordering, confirm fit and ratings to ensure seamless integration. The part number LAB3400K is the most reliable reference for matching the exact dimensions, trip characteristics, and mounting interfaces you need in your panel or switchgear. If your system requires precise spec alignment, this breaker is designed to meet those strict requirements.

Practical considerations and best practices

• Verification steps: cross-check the panel model, bus bar configuration, and mounting footprint against the LAB3400K’s specifications to avoid incompatibilities.
• Safety first: de-energize equipment and follow lockout/tagout procedures before replacement or retrofit work.
• System impact: assess the downstream protection needs for three-phase loads to ensure balanced fault protection across all legs.
• Documentation: keep the LAB3400K part number along with your panel’s electrical ratings in your maintenance records for future sourcing.

For professionals managing industrial power distribution, the LAB3400K delivers clear, dependable protection where it truly matters—reliability, compatibility, and peace of mind for three-phase systems operating up to 600V. If you’re planning a retrofit, replacement, or routine maintenance, this 400A, 3-Pole unit is a precise fit when the LAB3400K reference aligns with your equipment’s requirements.