Square D LHL36000MV 400A 3-Pole 600 V Circuit Breaker

Meet the Square D LHL36000MV, a robust 400 A, 3-pole circuit breaker designed for demanding 600 V three-phase power systems. Built to protect industrial feeders and equipment, this unit integrates seamlessly into Square D distribution panels and main disconnects, delivering reliable overcurrent protection when it matters most.

Designed with industrial reliability in mind, the LHL36000MV helps prevent costly downtime by quickly isolating faults and safeguarding motors, transformers, and other critical loads in high-demand environments. Its three-pole construction ensures balanced protection across all three phases, keeping your power distribution stable and more predictable during load fluctuations and fault conditions.

Key specifications

• Current rating: 400 A
• Poles: 3
• Voltage rating: 600 V
• Part number: LHL36000MV
• Brand lineage: Square D, part of the LHL series designed for industrial protection

Why this breaker is the right choice for your setup

• The 400 A rating accommodates substantial feeders common in manufacturing lines, large HVAC systems, and machine groups.
• Durable, field-ready construction: Built to endure demanding environments typical of industrial facilities, while providing consistent performance over time.
• Clear, high-visibility trip indication: Helps maintenance teams quickly identify and respond to faults, reducing downtime during service calls.
• Compatibility with Square D ecosystems: Designed to integrate with compatible Square D panels and components, supporting streamlined panel maintenance and upgrades.
• Operational confidence in 600 V networks: Suited for step-down transformers, motors, and other 600 V equipment where reliable protection is essential.

Applications and use cases

• Industrial distribution panels feeding large motors, conveyors, pumps, and compressors
• Main service disconnects in factories or processing plants
• Motor control centers and feeder circuits in manufacturing environments
• Any 3-phase, 600 V electrical installation requiring dependable overload and short-circuit protection

Practical guidance for installation and care

• Verify the panel or distribution gear is listed for the LHL36000MV and rated for 600 V systems
• Follow the manufacturer’s torque specifications and mounting guidelines to ensure secure, reliable operation
• Use as a direct replacement or alongside other Square D components to maintain a cohesive protection strategy
• Keep a record of protection settings and perform periodic inspections to confirm clean trip indicators and no signs of wear

Whether you’re upgrading a dense industrial feed or building a new 3-phase 600 V distribution system, the Square D LHL36000MV 400 A 3-Pole 600 V Circuit Breaker offers precise protection, robust construction, and reliable performance tailored to demanding environments. Add it to your lineup for focused, trustworthy overcurrent protection that helps keep your operations running smoothly.