LM3400L | Circuit Breaker | 400A | 3-Pole | 600V

The LM3400L Industrial Circuit Breaker is a robust, maintenance-ready protection device designed for retrofit and replacement projects where exact specifications matter. This 3-pole breaker delivers up to 400 amperes at a 600-volt rating, providing reliable, synchronized protection across all phases in demanding electrical systems.

Key advantages of the LM3400L

• Three-pole protection offers coordinated switching across all phases, reducing the risk of uneven load and arc faults in multi‑phase networks.
• 400A continuous rating makes it suitable for high‑current circuits feeding motors, conveyors, and other industrial equipment.
• 600V maximum voltage aligns with typical industrial distribution panels and switchgear used in manufacturing, processing, and facilities management.
• Clear compatibility reference with the part number LM3400L ensures you can verify fit against panel schedules, drawings, and maintenance records.
• Ideal for retrofit and replacement projects that demand exact specifications to minimize downtime.

Why this breaker is the right choice for your project

In environments where uptime matters, the LM3400L provides dependable disconnection and protection for high‑energy circuits. Its 3‑pole design helps ensure safe shutdown across all phases, reducing the risk of unbalanced loads and equipment damage in the event of a fault. By aligning with common 600V industrial systems, it simplifies planning and deployment in refurbished facilities.

Practical use cases

• Upgrading aging panelboards in factories and industrial facilities that require a 400A, 3-pole, 600V solution.
• Replacing failed breakers in motor control centers and distribution panels to restore reliable protection.
• Retrofit projects where system reconfigurations demand precise fit and rating matching to minimize downtime.

Specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Part number: LM3400L

Important compatibility note: Confirm fit and ratings before ordering. The part number LM3400L is the best reference for compatibility with your panel schedule and equipment.