Square D | LIL36400 | Circuit Breaker | 400A | 3-Pole | 600V | 200kA

Meet a purpose-built protection solution for demanding electrical environments: the Square D LIL36400 circuit breaker. With a 400A capacity, 3-pole configuration, and a 600V rating, this breaker is engineered to safeguard large three-phase systems, feeders, and motor circuits while simplifying maintenance and retrofits.

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Interrupting rating: 200kA

Why choose the Square D LIL36400 circuit breaker

• Designed for heavy-use industrial applications, delivering reliable protection for 3-phase power distribution.
• 3-pole configuration ensures synchronized protection across all phases, reducing the risk of unbalanced faults.
• The 200kA interrupting capability provides a robust shield against high short-circuit events, helping protect wiring and equipment downstream.
• Ideal for maintenance, retrofit, and replacement projects where precise electrical ratings are required.
• The part number LIL36400 is the most reliable reference for compatibility, helping you avoid mismatched components during procurement.

Ideal use scenarios

• Upgrading or replacing protection in industrial panels and switchgear that operate at 600V with 3-phase loads.
• Retrofits where a 400A, 3-pole, 600V solution is needed to match existing feeders and motor circuits.
• Spare parts planning for maintenance programs, ensuring quick swaps to minimize downtime.

Compatibility and ordering tips

• Always verify fit and ratings before ordering. The part number is the best reference for compatibility.
• Use the LIL36400 designation to match against your panel schedule, catalog, or service documentation to avoid mismatches.
• Consider your system’s short-circuit current and wiring configuration to ensure the 200kA interrupting rating aligns with your protection strategy.

Note: The details provided reflect the LIL36400 circuit breaker’s core specs and its intended use for maintenance, retrofit, and replacement scenarios. When in doubt, cross-check the part number against your equipment’s documentation to confirm exact compatibility.