Square D LXI36400 400A 3 Pole Molded Case Circuit Breaker – Plug In Mount – 600VAC

The LXI36400 by Square D is a current-limiting, 100% rated LXI (I-Line) molded case circuit breaker designed for high-performance power distribution and protection in industrial and commercial electrical systems. It utilizes an electronic non-interchangeable trip unit with LSI (Long-Time, Short-Time, Instantaneous) protection functions, providing precise fault detection and coordinated system protection. Rated at 400 amperes with a 600 amp maximum frame, the breaker operates up to 600VAC and delivers high interrupting capacity suitable for demanding electrical environments. Its plug-in mounting configuration and standard load-end terminals ensure efficient installation and reliable long-term operation.

Product Specifications

• Manufacturer: Square D
• Model Number: LXI36400
• Product Type: Molded Case Circuit Breaker
• Frame Style: LXI (I-Line)
• Mounting Type: Plug In
• Trip Unit Type: Electronic Non-Interchangeable
• Trip Functions: LSI (Long-Time, Short-Time, Instantaneous)
• Rated Current: 400 Ampere
• Number of Poles: 3 Pole
• Maximum Frame Capacity: 600 Amp
• Rated Design: 100% Rated, Current Limiting
• Standard Lug Type: Load End
• Rating Plug Included: ARP100
• Warranty: 1 Year

Technical Specifications

• Calibrated for operation at 40°C ambient temperature
• Current-limiting breaker design for enhanced protection performance
• Electronic trip system for precise fault response
• Non-interchangeable trip unit construction
• Designed for I-Line electrical distribution systems
• Plug-in mounting configuration for simplified installation
• High interrupting capacity performance
• Factory-installed load-end terminals

Voltage and Ratings

• Maximum Operating Voltage: 600 VAC
• Interrupting Rating at 240 VAC: 200 kA
• Interrupting Rating at 480 VAC: 200 kA
• Interrupting Rating at 600 VAC: 100 kA
• Frequency Rating: 50/60 Hz
• Current Rating: 400 Ampere

Product Data

• Brand: Square D
• Series: LXI (I-Line)
• Model: LXI36400
• Frame Type: L Frame
• Connection Type: Plug In
• Pole Configuration: 3 Pole
• Protection Type: LSI Electronic Trip
• Application: High-capacity industrial and commercial circuit protection with current-limiting capability

Important Note

The product image shown is for identification purposes only and may not represent the exact breaker configuration supplied. Accessories purchased with the breaker can be installed according to customer-specific requirements at no additional cost. This breaker includes a one-year in-house warranty covering shipping, repair services, labor, and replacement parts required for recertification. Warranty coverage excludes damage caused by misuse, improper installation, or normal operational wear and tear.

Returns are easy

You may return items within 30 days of delivery for a refund.

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