Square D HDA36015AA 36015A 3-Pole 600 V Circuit Breaker

Meet the Square D HDA36015AA 3-Pole 600 V Circuit Breaker—the trusted, purpose-built safety device that guards your three-phase power system with precise, coordinated interruption. Built for industrial and commercial environments, this breaker keeps critical equipment protected by interrupting current quickly and reliably when faults or overloads occur.

Why the HDA36015AA stands out

Designed specifically for 600 V three-phase circuits, this Square D breaker ensures all three conductors trip together. That synchronized response minimizes arcing risks and protects motors, transformers, and control systems from damage due to imbalanced or excessive current. With the Part Number HDA36015AA, you’re choosing a genuine replacement that aligns with Square D’s proven engineering and quality standards.

Key specifications

• Poles: 3
• Voltage rating: 600 V
• Current rating: 36015 A
• Part number: HDA36015AA
• Brand: Square D (Schneider Electric)

What this means for your system

• Protects three-phase feeders in industrial or commercial setups, maintaining balance across phases and reducing downtime due to electrical faults.
• Coordinated trip across all poles delivers safer shutdowns for downstream equipment, helping prevent cascading damage during fault conditions.
• Reliable replacement option that maintains compatibility with Square D panels and distribution systems designed for HDA-series breakers.

Ideal applications

Best suited for facilities with 3-phase, 600 V distribution networks—manufacturing floors, process lines, large mechanical rooms, and other industrial environments where robust, room-to-room protection is essential. If your electrical infrastructure relies on precise, trip-coordinated protection for 3-phase loads, the HDA36015AA is a targeted, dependable choice.

Installation and compatibility tips

• Verify panel compatibility by matching the panel labeling and mounting style to ensure a proper fit with the HDA36015AA.
• Have a licensed electrician perform installation or replacement, and follow all safety protocols, including de-energizing the circuit and employing lockout/tagout procedures.
• Keep a spare HDA36015AA on hand for planned maintenance or emergency replacements to minimize system downtime.