Square D HRA36150U31X 150A 3-Pole 600 V Circuit Breaker

The Square D HRA36150U31X circuit breaker is a rugged, reliable protection solution for 3-phase power systems. With a 150 A current rating and a 600 V maximum voltage rating, this 3-pole unit is engineered to safely interrupt fault currents and protect wiring, motors, and downstream equipment in commercial and light industrial environments.

• Part number: HRA36150U31X
• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V

Ideal for 3-phase distribution where robust protection is essential, the HRA36150U31X guards feeders and motor circuits against overloads and short circuits. Its 3-pole design ensures all phases are simultaneously disconnected, preventing dangerous floating voltages and promoting safer maintenance and operation.

Who benefits most from this breaker? facilities with moderate to high-current 3-phase loads, including manufacturing lines, HVAC and pumping systems, and large commercial electrical panels. It’s a practical replacement or upgrade for Square D installations requiring 150 A protection in a 600 V class network, helping you maintain reliable power distribution with fewer interruptions.

Why choose this Square D breaker? It combines a proven protection platform with a straightforward form factor that aligns with existing Square D panels and accessories, simplifying installation and future service. When you need solid, industry-standard 3-pole protection for 600 V systems, this unit delivers consistent performance and long-term reliability.