Square D | LAL34400MC | Circuit Breaker | 400A | 3-Pole | 480V

Secure reliable protection for demanding 480V, three‑phase power with the Square D LAL34400MC circuit breaker. Designed for maintenance, retrofit, and replacement projects where exact specifications matter, this 400A, 3‑pole unit provides dependable overcurrent protection for critical industrial workloads.

Key specifications in real-world terms

• Amperage: 400A continuous current rating, suitable for feeders and key distribution paths in mid‑to‑large industrial panels.
• Poles: 3‑pole design delivers true three‑phase protection, aligning with common 480V layouts in manufacturing, processing facilities, and data centers.
• Voltage: 480V system compatibility, enabling straightforward replacement or retrofit in existing 480V networks.
• Reference for compatibility: The exact part number is LAL34400MC, making it the most reliable reference when matching breakers to your panel and balance‑of‑system components.

Why it’s a smart choice for your facility

When your operation relies on uninterrupted 480V service with robust three‑phase protection, the LAL34400MC fits the bill precisely. It’s built to withstand the rigors of industrial environments while delivering dependable interruption protection for large motors, conveyors, pumps, and other high‑demand equipment. Using the correct part number simplifies sourcing, reduces downtime, and ensures you’re not guessing about fit or ratings.

Ideal use cases

• Retrofit projects where older 480V, 3‑phase systems need an exact match to existing panels.
• Maintenance replacements for feeders serving heavy machinery in manufacturing lines.
• Repairs or upgrades in facilities transitioning to higher‑demand 480V distribution without changing breaker trip characteristics.
• New installs that require a proven 400A, 3‑pole solution within 480V networks.

Practical tips for a smooth purchase

• Always confirm fit and ratings before ordering—ensure this LAL34400MC unit matches your panel’s documented specifications and your system’s 480V three‑phase configuration.
• Use the part number LAL34400MC as the definitive reference to verify compatibility with your panel schedule and balance‑of‑system components.
• Plan for replacement workflow by coordinating with maintenance logs, to minimize downtime during swap‑outs in high‑demand lines.

For projects requiring precise, dependable 480V three‑phase protection, the Square D LAL34400MC 400A, 3‑pole circuit breaker delivers performance you can trust. It’s a targeted, high‑value choice for industrial environments where compatibility and predictability matter most.