Square D LA364001127 Circuit Breaker, 400A, 3-Pole, 600V

Designed for demanding industrial environments, the Square D LA364001127 circuit breaker delivers reliable protection for three-phase power systems at up to 600V. With a 400 A rating and a 3-pole configuration, this device is built to safely interrupt heavy loads and maintain system stability during startup and fault conditions.

Ideal for industrial electrical service, maintenance, and replacement projects, this breaker is a trusted choice for facilities that rely on consistent motor loads, conveyors, pumps, and other high-demand equipment. The 3-pole design provides balanced protection across all three phases, helping prevent phase-to-phase faults and downstream equipment damage.

Why this Square D circuit breaker stands out

• 400 A rating tailored for high-current feeders and large machines common in manufacturing, processing, and distribution settings.
• 3-pole configuration delivers coordinated protection for three-phase systems, improving reliability and fault handling.
• 600V maximum voltage suitable for many industrial distribution networks, motors, and control gear.
• Brand and compatibility the LA364001127 part number helps you verify fit for your specific application and panel requirements.
• Industrial-grade reliability built to endure ongoing service in harsh environments typical of plant floors and service areas.

Practical use cases and scenarios

• Upgrading or replacing aging breakers in a three-phase motor control center to safeguard large pumps, fans, or compressors.
• Installing in new or existing industrial panels to ensure robust protection for high-current feeders feeding critical equipment.
• Maintenance cycles where timely replacement minimizes downtime and protects downstream processes from unexpected outages.

Compatibility and support

Note: Verify fit by part number LA364001127 and by your specific application requirements. If you need help matching a part number or confirming compatibility, reach out for expert assistance to ensure seamless integration with your current electrical architecture.

Technical specifications

• Manufacturer: Square D
• Part number: LA364001127
• Product type: Circuit Breaker
• Amperage: 400 A
• Poles: 3
• Voltage: 600 V