Square D HGA36100U44XAABCSJYP 100A 3-Pole 600 V Circuit Breaker

Meet the Square D HGA36100U44XAABCSJYP — a purpose-built 100 A, 3-pole circuit breaker designed for 600 V three-phase systems. This unit is crafted to protect the heavy feeders that power motors, HVAC drives, and other demanding loads in commercial and industrial environments, helping keep critical equipment safe and uptime steady.

• Part Number: HGA36100U44XAABCSJYP
• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V

Why the 3-pole, 600 V configuration matters

The 3-pole design provides coordinated protection across all three phases in a typical three-phase circuit, ensuring balanced interruption of fault currents and safeguarding connected equipment from uneven phase faults. The 600 V rating makes this breaker suitable for higher-voltage industrial applications where reliable overcurrent protection is essential.

Ideal use cases

• Three-phase feeders for industrial machinery, conveyors, and large motors
• Commercial facilities with 600 V distribution networks that require robust phase protection
• Replacement in Square D electrical panels designed to accept 3-pole, 600 V breakers

Built for reliable integration

This breaker is part of Square D’s protection lineup, engineered to fit compatible panels and systems that rely on standard 3-pole, 600 V protection. Its form and function are purpose-built to integrate smoothly with existing Square D installations, helping maintain consistent protection characteristics across your electrical infrastructure.

Practical tips for use

• Verify that your panel and downstream equipment are rated for 600 V and support 3-pole protection before installation.
• When replacing older breakers, ensure the mounting and pull-to-trip mechanisms align with your panel’s design for a secure, reliable fit.
• Use this 100 A unit for circuits feeding high-current loads where balanced protection across all three phases is critical.