Square D HGA36090SJYP 90A 3-Pole 600 V Circuit Breaker

Square D HGA36090SJYP is a rugged three‑pole circuit breaker designed to protect* three‑phase power distributions with precision. Rated at 90 A and capable of handling up to 600 V, this breaker is the reliable choice for industrial and commercial panels that demand consistent, safe protection for high‑current circuits. The part number to look for is HGA36090SJYP, ensuring you’re selecting the exact replacement or upgrade for Square D systems.

Key specifications at a glance

• Current rating: 90 A
• Pole count: 3
• Voltage rating: Up to 600 V
• Part number: HGA36090SJYP
• Brand: Square D

What makes this model special

Designed for three‑phase protection, the HGA36090SJYP 3‑pole breaker ensures that all three phases trip together when a fault is detected. That coordinated disconnection mitigates electrical stress on motors and equipment, reduces the risk of lingering faults, and minimizes downtime. Built for compatibility with Square D panels and enclosures, it integrates smoothly into existing infrastructure without the guesswork of mixing brands or incompatible formats.

Ideal use cases

• Three‑phase motor circuits in manufacturing lines, conveyors, or machine rooms
• Commercial or light industrial panels needing reliable protection for high‑current loads
• HVAC and large equipment configurations where balanced phase protection is essential

Why operators and installers choose this model

• Precise protection for three‑phase systems: ensures all phases shut down together on fault, preventing partial arc faults and equipment damage.
• Clear compatibility: part of the Square D HGA family, designed to drop into compatible panels and maintain consistent electrical performance.
• Long‑term reliability: built to handle demanding environments common in commercial and industrial settings, providing predictable behavior when it counts.

Installation and maintenance tips

For optimal results, verify panel compatibility with the HGA series before installation. Ensure conductors are sized for a 90 A rating and follow the manufacturer’s torque specifications for terminals. Regularly inspect for any signs of wear or overheating during routine maintenance, and replace the unit if the enclosure or bus connections show damage or corrosion.

How this compares to three‑pole alternatives

In three‑phase applications, a 3‑pole breaker like the HGA36090SJYP provides synchronized trip across all phases, which is essential for protecting motors and phase‑balanced loads. While 2‑pole options can protect individual phases, they may leave other phases energized during faults. Choosing the 3‑pole model simplifies wiring, improves safety, and supports more robust protection in high‑demand environments.