LA3400K | Circuit Breaker | 400A | 3-Pole | 600V

The LA3400K is an industrial circuit breaker engineered to protect and control three-phase power delivery in demanding 600V environments. Designed for maintenance, retrofit, and replacement tasks, this unit helps you keep critical equipment online while ensuring safety and reliability. Use the part number LA3400K as your primary compatibility reference to ensure a like-for-like fit and performance.

Key specifications

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

Why the LA3400K stands out

When you’re maintaining or updating an electrical system, exact specification alignment matters as much as overall protection. The LA3400K delivers a straightforward, compatible solution for 3-phase 600V circuits at a 400A capacity. Rely on the part number as the most reliable reference for matching form, function, and ratings in existing panels, bus configurations, and distribution setups.

Ideal use scenarios

• Maintenance on aging or drift-prone 3-phase equipment operating at 600V, where a precise 400A breaker is required.
• Retrofits that upgrade or replace legacy breakers with a like-for-like specification to minimize downtime and wiring changes.
• Replacement in service panels, motor control centers, or distribution boards that run three-phase power at 600V.

Practical considerations for procurement

Before ordering, confirm your system’s fit and ratings match the LA3400K specifications. The part number is the best reference for compatibility, helping you avoid mismatches that could impact system protection or interlock mechanisms. For best results, cross-check with your panel’s documentation and any field-installed accessories that accompany the original breaker.

Installation and handling tips

• Verify three-phase configuration and ensure the panel bus supports a 3-Pole device at 600V.
• Inspect mounting and terminal interfaces to align with existing hardware for a seamless installation.
• Follow your organization’s safety protocols during replacement or retrofitting to prevent accidental energization.

Designed to support reliable protection in demanding industrial settings, the LA3400K 400A 3-Pole 600V circuit breaker helps you maintain uptime, meet safety requirements, and simplify replacement workflows when upgrading or maintaining three-phase power systems.