Square D HGL36150U44XAA 150A 3-Pole 600 V Circuit Breaker

Engineered by Square D for demanding electrical environments, the HGL36150U44XAA 150A 3-Pole 600 V Circuit Breaker delivers dependable overcurrent protection for three‑phase systems. With a 150 A rating and a 600 V maximum, this breaker safeguards motors, conveyors, and other heavy loads while maintaining reliable power distribution across your panel.

Key specifications

• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V
• Brand and model: Square D HGL36150U44XAA

Why this 3‑pole, 600 V breaker stands out

The three‑pole design provides coordinated protection across all phases, which is essential for maintaining the integrity of three‑phase equipment and reducing the risk of phase‑to‑phase faults. Built by Square D, this breaker is a precise, purpose‑built solution for distribution panels that demand dependable performance and long‑term reliability. The HGL36150U44XAA part number ensures you’re specifying the exact 150 A, 3‑pole, 600 V device for your panel configuration, helping you avoid mismatches that can complicate maintenance or future upgrades.

Ideal use cases

• Main feeder protection in commercial or light industrial 3‑phase panels
• Protection for 3‑phase motor circuits and other high‑demand equipment up to 150 A
• Upgrading older distribution systems that require a 600 V protection device with a 150 A rating

Practical benefits and how it helps you

With the Square D HGL36150U44XAA, you get focused protection for critical three‑phase loads, reducing downtime due to electrical faults and helping preserve motor life and downstream equipment. Its 600 V rating covers a wide range of industrial and commercial applications, giving you flexibility in panel design and future expansion. By choosing a dedicated 150 A, 3‑pole device from a trusted brand, you’re investing in a component that’s designed to perform consistently in demanding environments while simplifying panel labeling, maintenance, and inspections.

Installation and compatibility notes

Ensure this device is compatible with your panel’s directory and bus arrangement, and verify it matches the required 3‑pole, 600 V protection specification. As with all electrical installations, follow appropriate safety procedures and local codes to ensure proper seating and secure connections for reliable operation over time.