LAY3400 | Circuit Breaker | 400A | 3-Pole | 600V

Meet the LAY3400—the industrial circuit breaker engineered for demanding three‑phase power systems. With a robust 400A rating across 3 poles and a 600V operating capacity, this unit is purpose-built for maintenance, retrofit, and replacement projects where exact specifications matter.

Why the LAY3400 stands out

• 400A protection for demanding circuits—designed to safely interrupt high‑current loads in industrial environments.
• 3‑pole configuration provides coordinated protection across all three phases, helping prevent uneven loading and equipment damage.
• 600V rated insulation and operation support typical industrial power systems, reducing the need for multiple upgrades when upgrading panels.
• Industrial-grade construction built to endure the wear and tear of maintenance schedules, retrofits, and long service life in challenging environments.
• Clear compatibility reference—the part number LAY3400 is the best reference for ensuring you’re selecting the right device for your panel or enclosure.
• Retrofit and replacement ready—specifically suited for projects where matching specs is essential to minimize downtime and ensure reliable protection.

Ideal use cases and who benefits

• Facility upgrades in manufacturing, warehousing, and processing facilities that rely on stable three‑phase power.
• Replacement of failed or obsolete breakers in existing panels without compromising protection levels.
• Retrofit projects where current systems require a precise 400A, 3‑pole, 600V solution to maintain performance and safety standards.
• Maintenance crews seeking a dependable component that aligns with established electrical specs during service outages.

How to ensure a proper fit

Before ordering, verify that the installation matches the LAY3400’s specifications: 400A amperage, 3‑pole configuration, and 600V rating. The part number is the most reliable reference for compatibility, so use LAY3400 as your anchor during sourcing and panel matching. Also, confirm enclosure type, bus arrangement, and mounting style to ensure seamless installation with your existing equipment.

Practical tips for deployment

• Cross‑check the breaker’s trip characteristics and ensure they align with your system protection requirements.
• Coordinate with your panel’s service schedule to minimize downtime during retrofits or replacements.
• Keep spare LAY3400 units on hand for planned maintenance to help maintain system uptime.