Square D HDA36080SK 80A 3-Pole 600 V Circuit Breaker

The Square D HDA36080SK is a robust three‑pole circuit breaker designed to protect large three‑phase circuits in commercial and industrial settings. With an 80 A rating and a 600 V maximum, this part delivers dependable overcurrent protection for demanding equipment while fitting into compatible Square D panels and enclosures. Rigorously built for steady performance, the HDA36080SK helps you maintain safe power distribution with predictable operation when faults occur.

Key specifications

• Part Number: HDA36080SK
• Current rating: 80 A
• Poles: 3
• Voltage rating: 600 V
• Type: 3‑pole circuit breaker (three‑phase protection)
• Brand: Square D

Ideal for

• Three‑phase motor circuits in manufacturing, HVAC, and processing facilities
• Industrial panelboards and distribution panels requiring reliable 3‑pole protection
• Upgrading or stocking spare parts for Square D installations to ensure quick, compatible replacements

What problems it solves

By interrupting current on all three hot legs when overloads or faults are detected, this breaker helps prevent motor damage, electrical fires, and downstream equipment failures. Its 80 A rating is suitable for mid‑range loads, while the 600 V capability covers higher‑voltage distribution common in industrial environments. Using a dedicated three‑pole unit also helps maintain balanced protection across all phases, reducing the risk of paired‑phase faults and uneven loading.

Installation and compatibility

Designed to integrate with Square D systems, the HDA36080SK provides a straightforward upgrade path for compatible panels and enclosures. When replacing or stocking parts, verify the panel compatibility and ensure alignment with your three‑phase distribution setup. For best results, install by a qualified electrician who can confirm correct mounting, electrical clearance, and proper breaker fit within the existing bus and enclosure.

Practical tips

• Match this 80 A, 3‑pole unit to three‑phase circuits that require protection across all phases up to 600 V.
• Keep an on‑hand spare of the same part number (HDA36080SK) to minimize downtime in critical systems.
• Consult your local electrical codes and the panel manufacturer’s guidelines to ensure proper installation and safety clearances.

In summary, the Square D HDA36080SK 80A 3‑Pole 600 V Circuit Breaker is a purpose‑built solution for reliable three‑phase protection in demanding electrical environments. Its precise amperage, complete three‑pole coverage, and compatibility with Square D systems make it a thoughtful choice for safeguarding motors, conveyors, compressors, and other high‑demand equipment.