LA3400NW | Circuit Breaker | 400A | 3-Pole | 600V

Industrial-grade protection built to endure demanding electrical environments, the LA3400NW Circuit Breaker delivers reliable 400A capability across a 3-pole, 600V three-phase system. Designed for maintenance, retrofit, and replacement projects where exact specifications matter, this unit ensures continued service without compromising safety or performance. The part number LA3400NW is the clearest reference for compatibility, so confirm fit and ratings before ordering.

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Reference part: LA3400NW

Why this model matters for your operation

In industrial settings, reliable overcurrent protection is non-negotiable. The LA3400NW is built to integrate with existing 3-phase distribution schemes, safeguarding motors, drives, and feeders from electrical faults. Its 400A rating provides robust protection for mid-to-large scale panels, MCCs, and feeders, reducing the risk of damage from short circuits and overloads while helping you maintain uptime in production environments.

Ideal use cases

• Maintenance and retrofit projects where current breakers no longer meet load or protection requirements
• Replacement in legacy switchgear or panelboards that require a 400A, 3-pole, 600V device
• New installations or upgrades in manufacturing lines, processing plants, or large mechanical systems with three-phase power

Compatibility and installation guidance

Because the LA3400NW is so closely tied to its exact specifications, the best reference for compatibility is the part number itself. Before purchasing, verify that your equipment expects a 400A, 3-pole, 600V, LA3400NW-rated device. For smooth retrofits, compare mounting footprint, terminal arrangement, and electrical ratings with your existing breaker to minimize downtime and ensure secure, code-compliant installation.

Practical tips for maximizing performance

• Document your current system’s load profile to confirm that 400A protection aligns with actual demand and fault-clearing requirements.
• Always cross-check the device’s ratings against panelboard or MCC specifications to avoid mismatches in bus rating or interrupting capacity.
• Maintain clear labeling of the replacement part alongside the system’s protective device schedule for future maintenance efficiency.

Ready for retrofit or replacement, the LA3400NW brings dependable three-phase protection to your critical infrastructure. Its focused, specification-driven design helps you preserve system integrity, minimize downtime, and keep your industrial operations running smoothly.