Industrial LAM3400F 400A 3-Pole 600 V Circuit Breaker

Meet the Industrial LAM3400F 400A 3-Pole 600 V Circuit Breaker—a purpose-built protector for demanding 3-phase power systems. Part Number LAM3400F, this breaker is engineered to deliver dependable overcurrent protection where it matters most in industrial environments.

Why engineers choose the LAM3400F

• Three-pole architecture: ensures all three live conductors trip together, delivering synchronized protection across your 3-phase circuit.
• High-current capability: rated for 400 A of continuous load, making it suitable for heavy machinery feeders and large distribution circuits.
• 600 V voltage rating: designed for industrial power networks up to 600 V, providing reliable protection where voltage levels demand robust disconnection.
• Rugged industrial build: engineered to withstand demanding environments found on factory floors and in control panels.
• Simple integration: ideal for panel boards, motor control centers, and distribution panels requiring a compact, reliable main protection device.

What problems it solves

By interrupting all phases simultaneously, the LAM3400F minimizes arc exposure and helps prevent equipment damage from overloads or short circuits. This translates to less unplanned downtime, easier maintenance, and safer shutdowns for your critical processes.

Use cases and ideal applications

Best suited for:

• 3-phase power feeds in manufacturing lines, CNC/machining centers, and heavy machinery
• Main protection in 600 V industrial panels and switchgear
• Motors and drives that require reliable overcurrent protection on large feeders

Specifications at a glance

• Part Number: LAM3400F
• Current rating: 400 A
• Poles: 3
• Voltage rating: 600 V

Tips for optimal performance

• Match the breaker’s 400 A rating with appropriately sized conductors and upstream protective devices to ensure coordinated protection.
• Verify compatibility with your panel board or switchgear’s mounting and trip characteristics before installation.
• Store and handle the breaker in a clean, dry environment to preserve interlock and termination integrity.

Ready to secure reliable, three-phase protection for your 600 V industrial systems? Add the LAM3400F to your cart and protect your equipment, uptime, and people with a trusted, purpose-built circuit breaker.