Square D HJL36030M71AA 71A 3-Pole 600 V Circuit Breaker

Square D HJL36030M71AA is a robust 71-amp, 3-pole circuit breaker designed for 600 V systems. Built by Square D, a trusted name in industrial electrical protection, this unit delivers reliable overload and short‑circuit protection for demanding 3‑phase applications. If you’re upgrading, stocking spare parts, or replacing a failed breaker in a commercial or light industrial panel, this part offers a precise match to your existing equipment.

With a 3‑pole configuration and a 600 V rating, this breaker is well-suited for protecting 3‑phase feeders and motor circuits in manufacturing lines, process equipment, and power distribution panels. Its 71 A current rating provides a clear, scalable protection level for mid‑range loads, helping you prevent costly electrical faults while maintaining smooth operations.

Key specifications

• Current rating: 71 A
• Poles: 3
• Voltage rating: 600 V
• Part Number: HJL36030M71AA
• Brand: Square D

Why this part stands out

• Precise compatibility: It’s a direct part match for Square D panel boards and maintenance inventories, ensuring consistent trip characteristics and system protection.
• Three‑phase protection: The 3‑pole configuration is ideal for clean, balanced protection of 3‑phase loads, reducing the risk of uneven current and equipment stress.
• Durable, mission‑critical design: Built to withstand the rigors of industrial environments, helping minimize downtime during maintenance or replacement tasks.
• Clear identification: The exact part number helps technicians quickly verify compatibility, speeding up service calls and inventory management.

Ideal for:

• Protecting 3‑phase motor controllers, conveyors, and industrial drive systems up to 71 A
• Feeder protection in commercial electrical panels and panel boards
• Routine replacement parts for facilities with Square D electrical infrastructure

Practical tips for installation and use

• Confirm panel compatibility: Ensure the panel is rated for 600 V and supports 3‑pole, 71 A breakers of this style.
• Follow manufacturer guidance for installation torque and seating to maintain proper electrical contact and protection reliability.
• Use as part of a planned maintenance program: keeping a stocked, correctly rated breaker like HJL36030M71AA reduces downtime during outages or equipment faults.
• Label clearly in the service queue: using the exact part number helps with future replacements and audits.

Whether you’re an electrical contractor, facilities manager, or OEM technician, the Square D HJL36030M71AA 71A 3-Pole 600 V Circuit Breaker provides dependable, precise protection for critical 3‑phase circuits. Add it to your toolkit for quick, reliable replacements and consistent system safety in demanding environments.