Square D HGA36150UN 150A 3-Pole 600 V Circuit Breaker

Meet the Square D HGA36150UN—a robust 150 A, 3-pole circuit breaker designed for demanding three-phase power distribution up to 600 V. Built by Square D, this breaker delivers dependable protection for commercial and light industrial electrical systems, helping you safeguard motors, feeders, and critical equipment.

Why choose the HGA36150UN? It’s engineered to handle the rigors of real-world use in panels and enclosures that rely on consistent trip performance and durable construction. The 3-pole design provides full three-phase protection, making it ideal for three-phase motors, conveyors, HVAC gear, and other equipment that drives productivity in busy facilities.

Key features

• Three-pole configuration for complete three-phase circuit protection up to 600 V
• 150 A current rating suitable for large feeders and motor applications
• Rugged Square D construction designed for reliable operation in standard panels and enclosures
• Straightforward mounting and secure electrical connections to streamline installation

What problems does it solve?

By quickly interrupting fault currents, the HGA36150UN minimizes electrical damage, protects wiring insulation, and reduces the risk of downtime caused by overloads or short circuits. Its predictable performance supports safer maintenance, faster fault diagnosis, and longer equipment life in demanding environments.

Ideal applications

• Three-phase motors and driven equipment in manufacturing, facilities, and processing plants
• Incoming feeders and distribution circuits in commercial electrical rooms and data-centric environments
• Retrofit projects where a reliable, high-capacity protection device is needed

Practical installation tips

• Match the 600 V rating to your system to ensure proper protection and avoid nuisance trips
• Verify conductor sizing and coordination with upstream protection per local codes and manufacturer guidelines
• Follow standard safety practices and installation procedures to maintain performance and longevity

The Square D HGA36150UN brings trusted protection to your three-phase power framework, aligning seamlessly with other Square D components to deliver consistent reliability, straightforward integration, and long-term peace of mind for your electrical infrastructure.