Industrial KL3400T 400A 3-Pole Circuit Breaker

The Industrial KL3400T 400A 3-Pole Circuit Breaker is built for harsh industrial environments where dependable power protection matters. With a 400 A rating and a true three-pole design, it delivers balanced, coordinated protection across all phases, helping to guard heavy machinery, conveyors, and critical feeders from overloads and short circuits.

Part Number KL3400T stands out as a precise replacement choice, simplifying procurement and ensuring compatibility with existing panels and wiring schemes. This makes it an ideal fit for facilities already relying on KL3400T-series breakers or those upgrading to higher-capacity three-phase protection without reconfiguring their power distribution layout.

Key advantages of the KL3400T 400A 3-Pole Breaker

• Three-pole design for coordinated protection—protects all three phases together, reducing the risk of phase-to-phase faults and improving overall system reliability.
• High-current capacity—with a 400 A rating, it handles demanding industrial circuits and heavy loads typical of manufacturing floors and process lines.
• Direct compatibility—engineered as the KL3400T part number, facilitating straightforward replacements and consistent stock management.
• Rugged industrial construction—designed to endure the vibrations, dust, and demanding duty cycles common in industrial settings while delivering dependable protection.

Ideal use cases

• Feed circuits for large motors, compressors, pumps, and automated lines in manufacturing facilities.
• Primary or secondary protection in three-phase distribution panels requiring a 400 A device.
• Spare part in maintenance inventories to ensure rapid replacements and minimal downtime.

Installation guidance and best practices

• Ensure the surrounding panel and wiring are rated for 400 A and compatible with the KL3400T footprint.
• Position and secure the breaker according to standard electrical codes and manufacturer guidelines.
• When in doubt, consult your facility’s electrical engineer or the panel specifications to confirm three-phase compatibility and trip coordination.