Square D HGA36150UD 150A 3-Pole 600 V Circuit Breaker

The Square D HGA36150UD is a rugged 150 A, 3-pole, 600 V circuit breaker crafted for demanding 3-phase power distribution. With the part number HGA36150UD, this unit is designed to integrate seamlessly into compatible Square D panels, delivering reliable overcurrent protection where it matters most.

Key specifications

• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HGA36150UD
• Design: molded-case circuit breaker for industrial environments
• Three-pole protection: ensures simultaneous disconnection of all phases in a 3-phase system

What problems it solves

In any three-phase installation, protecting the wiring, motors, and downstream equipment from overcurrent is critical. The HGA36150UD interrupts fault currents quickly and reliably, reducing the risk of insulation damage, downtime, and fire hazards. By tripping all three poles together, it prevents unbalanced phase conditions that can stress motors and drives.

Ideal use cases

• Industrial facilities with three-phase power distribution and motor feeders up to 150 A
• Commercial and manufacturing environments where reliable protection for 3-phase circuits is essential
• Panel upgrades or replacements in systems designed to operate at up to 600 V

Why choose the Square D HGA36150UD

• Brand-backed durability from Square D, a trusted name in electrical protection
• Three-pole design provides coordinated protection across all phases, improving overall system safety
• 600 V rating expands suitability to mid- to high-voltage distribution applications
• Precise current rating (150 A) and a compact molded-case format for easier panel installation and space management

Installation and compatibility guidance

Use this breaker in panels and assemblies designed for Square D HGA-series devices. For a safe and compliant setup, follow standard electrical practices, ensure proper mounting in compatible enclosures, and connect conductors according to the electrical code and manufacturer guidelines. If in doubt, consult a licensed electrician to verify panel compatibility and installation requirements.

Practical tips

• Verify system voltage and phase configuration before installation to confirm the 600 V rating matches your distribution network
• Keep the surrounding area clean and free from moisture or conductive debris to preserve performance and safety
• Document the change with your facility’s asset management records, including part number and rating for future maintenance or upgrades