Square D HLA36100SR 100A 3-Pole 600 V Circuit Breaker

The Square D HLA36100SR 100A 3-Pole 600 V Circuit Breaker is a purpose-built solution for reliable three-phase protection in demanding electrical systems. With a 100 A rating and a 600 V maximum, this unit is designed to safeguard larger motors, pumps, and distribution circuits while maintaining smooth, predictable operation in industrial and commercial environments.

• Part Number: HLA36100SR
• Current Rating: 100 A
• Poles: 3
• Voltage Rating: 600 V

Ideal use scenarios

• Three-phase motor circuits in manufacturing lines, conveyors, and processing equipment up to 100 A
• Power distribution for commercial facilities that require protection for higher-voltage panels and equipment
• Backup and emergency power distributions where reliable fault interruption is essential for safety and downtime reduction

Why this model stands out

Designed to protect three-phase loads with a strong emphasis on dependable interruption across all phases, the Square D HLA36100SR provides balanced protection for complex electrical networks. Its 600 V rating gives you the capability to safely manage higher-voltage distribution, while the 100 A capacity matches mid-size motors and equipment without unnecessary nuisance trips. As part of the Square D family, this breaker aligns with standard panel configurations, simplifying replacement, inventory management, and ongoing maintenance.

Installation and compatibility

• Ensure your panel supports Square D HLA-series breakers and is configured for a 3-pole, 600 V protection device
• Verify full-load and startup current to confirm the 100 A rating is appropriate for your application
• Follow manufacturer torque specifications and use proper terminations to maintain reliable electrical contact
• Comply with local codes and have a licensed electrician perform installation or replacement

Practical tips for best results

Keep a stock of compatible HLA36100SR units for planned maintenance and potential motor startup surges. When replacing an older breaker, confirm the bus interface and mounting compatibility to avoid fitment issues. Regularly inspect for signs of overheating or physical wear, and replace immediately if any abnormal condition is observed to safeguard equipment and personnel.