Square D HLA36100UR 100A 3-Pole 600 V Circuit Breaker

The Square D HLA36100UR 100A 3-Pole 600 V Circuit Breaker is engineered to protect 3-phase power systems in commercial and light-industrial settings. With a robust 100 A rating and a 600 V maximum, this unit delivers reliable overcurrent protection while ensuring safe, simultaneous disconnection of all three phases when faults occur.

• Part number: HLA36100UR
• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V

Why this 3-pole design matters: in three-phase systems, a single-point disconnect that interrupts all phases at once reduces arc exposure and minimizes equipment damage during fault events. The Square D HLA36100UR delivers synchronized protection across each active leg, supporting safer startup and shutdown of 3-phase machinery and feeders.

• Targeted protection for three-phase loads: ideal for motors, pumps, compressors, and other 3-phase equipment common in commercial and light-industrial applications.
• Durable, panel-friendly construction: built to withstand everyday service panel environments while maintaining consistent trip performance.
• Easy replacement in compatible Square D installations: designed to fit standard Square D panels that accept this 3-pole, 100 A, 600 V form factor.
• Clear identification for maintenance and reduced downtime during servicing or upgrades.

Practical use cases include protecting 3-phase motors on production lines, safeguarding large HVAC systems and commercial compressors, and serving as a reliable main-distribution or branch-protection device in service panels. If you’re upgrading an aging setup or expanding a 3-phase distribution, this breaker provides a precise match for 100 A circuits up to 600 V.

Tips for deployment: verify that your panel is rated for 3-pole, 100 A, 600 V devices and follow local electrical codes during installation. Keep the part number handy (HLA36100UR) for future maintenance or replacement—efficient same-model swaps help maintain system protection without guesswork.