Square D HDA36090SDYP 90A 3-Pole 600 V Circuit Breaker

Engineered by Square D, the HDA36090SDYP is a rugged three-pole circuit breaker designed to safeguard 3‑phase electrical systems up to 600 V. With a 90 A current rating, this device delivers precise, reliable protection for feeders, motors, and distribution circuits in demanding commercial and industrial environments.

Key specifications at a glance

• Part number: HDA36090SDYP
• Current rating: 90 A
• Poles: 3
• Voltage rating: 600 V
• Brand: Square D

Why this 3‑pole, 90 A breaker stands out

When protecting three‑phase systems, a single, multi‑pole device simplifies panel layouts and wiring while providing coordinated protection across all phases. The Square D HDA36090SDYP consolidates three conductors into one robust unit, reducing installation complexity and space requirements in switchboards, motor control centers, and commercial panels. This is especially valuable in applications where balanced phase protection and quick, reliable disengagement are critical for maintaining uptime and protecting connected equipment.

Ideal applications

• Three‑phase feeders in industrial control panels
• Motor control centers and large equipment distribution
• Commercial electrical distribution boards serving heavy loads
• Retrofits or new installations where space and wiring efficiency matter

How it solves real-world problems

• A single 3‑pole device ensures synchronized interruption across all phases during faults, reducing the risk of imbalanced loads and equipment damage.
• Replacing multiple single-pole breakers with one multi‑pole unit simplifies panel layouts and minimizes wiring complexity.
• Engineered to operate effectively in higher‑voltage environments, safeguarding wiring and connected loads from overcurrent events.
• Built by Square D, a long‑standing name in electrical protection with a reputation for dependable performance in demanding installations.

Practical tips for use and installation

• Verify panel compatibility with HDA‑series breakers and ensure the panel rating aligns with a 600 V capability and a 90 A protection level.
• Plan for clear phase balance in three‑phase systems to maximize the protective benefit of a three‑pole device.
• During retrofit projects, consolidating three individual breakers into this single unit can streamline maintenance and replacement planning.
• Follow local electrical codes and the device’s installation manual to ensure correct mounting, wiring ferrules, and torque specifications.

Choose the Square D HDA36090SDYP for dependable, three‑phase overcurrent protection that fits into compact, efficient panel designs while delivering clear, on‑the‑spot protection across all three phases up to 600 V. It’s a practical, future‑leaning choice for facilities seeking reliability, simplicity, and scalable protection for their power distribution networks.