Square D HLL36080UA 80A 3-Pole 600 V Circuit Breaker

The Square D HLL36080UA 80A 3-Pole 600 V Circuit Breaker is engineered to deliver dependable protection for three-phase electrical systems. With an 80-amp current rating, three poles, and a 600-volt maximum rating, this breaker is designed to safeguard demanding environments where reliable isolation and fast fault response are essential. Key specifications

• Current rating: 80 A
• Poles: 3
• Voltage rating: 600 V
• Part Number: HLL36080UA
• Brand family: Square D

Why choose the Square D HLL36080UA

• Precise three-phase protection: Ideal for distributed loads that operate on three-phase power, ensuring coordinated interruption across all conductors.
• Robust construction for demanding environments: Built to handle industrial and commercial electrical settings where reliability matters most.
• Clear, dependable trip behavior: Engineered to respond consistently under overload conditions, helping minimize equipment damage and downtime.
• Part of the trusted Square D line: Backed by decades of power distribution design expertise, offering compatibility with standard installation practices and enclosure ecosystems.

Ideal use scenarios

• Industrial control panels and switchboards that run on three-phase power up to 600 V
• Commercial electrical rooms with medium-to-large loads requiring reliable fault isolation
• Motor control circuits and drive systems where predictable, fast protection is critical

Installation and safety notes

When wiring the HLL36080UA, follow standard electrical wiring practices and the panel manufacturer’s guidelines. Verify that this 80 A, 3-pole, 600 V breaker matches the system requirements and enclosure specifications before installation. For ongoing safety, ensure the circuit is de-energized during maintenance and consult the official installation manual for torque and cycling details.

Practical tips for maximizing performance

• Group related circuits to simplify troubleshooting and maintenance around the same panel section.
• Keep a record of trip history to spot evolving load patterns and prevent nuisance trips.
• Schedule periodic inspections of the surrounding panel environment to prevent dust and moisture ingress from impacting performance.

If you’re upgrading or stocking spare parts for a three-phase distribution system, the Square D HLL36080UA delivers consistent protection, clear trip signaling, and a reliable 80A capacity for balanced, safe operation at up to 600 V.