Square D HJL36050M72AA 72A 3-Pole 600 V Circuit Breaker

The Square D HJL36050M72AA circuit breaker is a robust solution for protecting three‑phase power in commercial and industrial environments. With a 72 amp rating and a 600-volt operating limit, this 3‑pole unit is designed to handle demanding loads while providing reliable fault protection.

• Current rating: 72 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HJL36050M72AA
• Brand/series: Square D (HJL family)

Ideal for safeguarding three‑phase motors, pumps, conveyors, and other industrial equipment, the HJL36050M72AA helps prevent damage from overloads and short circuits while keeping downtime to a minimum. Its 3‑pole design ensures synchronized protection across all three phases, enabling safe shutdown of entire equipment trains when faults occur.

Why choose this Square D circuit breaker? It combines the reliability Square D is known for with a configuration that fits standard industrial panels and enclosures used in manufacturing, processing plants, and HVAC systems. If you’re upgrading protection for a mid‑sized three‑phase circuit or stocking spare parts for a maintenance program, this unit is a precise match for 72 A circuits at 600 V.

Practical considerations:

• Verify compatibility with your panel or enclosure’s frame style and mounting arrangement.
• Use the correct torque settings for terminal connections to ensure a solid, safe clamp.
• Keep a few spare units on hand for planned maintenance to minimize downtime.