Square D HDA36090SKYP 90A 3-Pole 600 V Circuit Breaker

The Square D HDA36090SKYP 90A 3-Pole 600 V Circuit Breaker delivers dependable three-phase protection for commercial and light industrial electrical systems. Built to interrupt fault currents quickly and reliably, this 90-amp breaker safeguards wiring, panels, and connected equipment in busy electrical rooms and switchgear environments. As part of the Square D HDA family, it’s designed to handle demanding service conditions while fitting into standard three-pole distribution setups.

• Part Number: HDA36090SKYP
• Current rating: 90 A
• Poles: 3
• Voltage rating: 600 V
• Configuration: Three-pole circuit protection for 3-phase systems

Who is this for? Facilities managers, electrical contractors, and plant engineers who design or maintain commercial or light industrial panels will value a breaker that aligns with Square D panels and distribution gear. The HDA36090SKYP is ideal for protecting feeders, branch circuits, and motors in three-phase installations where up to 600 volts are present, ensuring quick isolation of faults and preventing damage from overloads.

Why choose this model? It offers robust, three-phase protection with a 90-amp capacity, making it suitable for moderate motor loads and distribution circuits. Because it’s a dedicated Square D component, it integrates smoothly with compatible panels and accessories, helping to reduce compatibility concerns during upgrades or panel replacements. This model is a practical choice when you need reliable current-carrying capability without over-specifying for the application.

Practical use scenarios include:

• Three-phase feeder protection in commercial power distribution panels
• Motor control center circuits requiring solid overcurrent protection at 90 A
• Branch circuit protection in industrial facilities with up to 600 V service

Installation and safety notes: Use in equipment and panels designed for three-pole, 90 A protection within systems rated for up to 600 V. As with all high-power electrical components, installation and maintenance should be performed by qualified personnel following all applicable electrical codes and standards. This ensures proper coordination with upstream protections and reliable performance over the lifecycle of the installation.