LAB3400S | Circuit Breaker | 400A | 3-Pole | 600V

LAB3400S Industrial Circuit Breaker is built for reliability in demanding electrical environments. This 400A, 3-pole, 600V unit is the trusted choice for maintenance, retrofit, and replacement projects where exact specifications matter to keep systems safe and compliant.

Key specifications

• Amperage: 400A
• Poles: 3-Pole (three-phase)
• Voltage rating: 600V
• Purpose: Industrial circuit breaker for panel integration and service continuity
• Compatibility reference: Part number LAB3400S is your strongest indicator for matching fit

Why this LAB3400S stands out

• Precise replacement fit for three-phase systems: Designed to align with standard industrial panels, reducing installation time and potential wiring adjustments.
• Compact, purpose-built design for retrofit projects: Maintains the existing footprint while delivering robust protection at a 400A rating and 600V capacity.
• Reliable maintenance-friendly experience: Facilitates straightforward removal and replacement, helping minimize downtime during service windows.
• Clear compatibility path: Rely on the LAB3400S part number as the primary reference when cross-checking against your panel, busing, and load configurations.

Use cases and scenarios

• Maintenance: Swap in a like-for-like unit to restore dependable protection in a 3-phase distribution circuit without reconfiguring wiring.
• Retrofit: Upgrade older equipment to a 400A, 3-pole, 600V rating to support revised load demands while preserving the existing panel layout.
• Replacement: Deploy in cabinets and disconnects where a direct-fit, three-pole 600V breaker is required to maintain system safety and continuity.

Compatibility and ordering tips

Always confirm fit and ratings against your panel documentation before ordering. Use LAB3400S as the primary compatibility reference to ensure the replacement matches your existing breaker’s footprint, mounting style, and electrical characteristics. If you’re unsure, compare the panel label, the breaker’s amperage and pole configuration, and the 600V rating to avoid downtime and ensure seamless operation.