Square D HDA36150U31XAABCSJYP 150A 3-Pole 600 V Circuit Breaker

Meet the Square D HDA36150U31XAABCSJYP, a purpose-built 150 A, 3-pole circuit breaker designed to safeguard 3-phase electrical distribution up to 600 V. Built by a trusted brand, this replacement part delivers reliable overcurrent protection for demanding industrial and commercial environments where consistent performance matters.

Key specifications and what they mean for you

• Current rating: 150 A — provides robust protection for feeders and large equipment without nuisance trips in steady, high-load installations.
• Poles: 3 — suitable for typical 3-phase power distribution, helping maintain balanced loads across phases.
• Voltage rating: up to 600 V — designed for mid-to-large scale electrical systems common in industrial settings and commercial applications.
• Brand and part integrity — authentic Square D component (HDA36150U31XAABCSJYP) engineered to fit compatible Square D panels and distribution enclosures, helping ensure proper fit and electrical alignment.

Why choose this 3-pole 150 A breaker for your installation

For facilities that rely on stable, uninterrupted 3-phase power, this breaker provides decisive protection when overcurrent conditions occur. Its 150 A rating matches mid-to-high-capacity feeders, making it ideal for safeguarding large motors, compressors, and other heavy loads without compromising system reliability. The 3-pole design helps maintain phase balance, reducing the risk of uneven current that can stress components over time.

Ideal use cases

• Main distribution panels in light industrial or commercial facilities that operate at up to 600 V.
• Replacement or upgrade for aged or worn 3-pole breakers in Square D installations to restore proper protection and panel compatibility.
• Large equipment feeders where a reliable 150 A interrupting device supports smooth operation and quick outage responses.

Installation and compatibility notes

As a genuine Square D part, this breaker is designed to align with Square D enclosures and panelboards. For best results, verify panel compatibility with the HDA36150U31XAABCSJYP part number and follow standard electrical practices, including correct torque on terminations and adherence to local electrical codes. If you’re replacing an older unit, ensure the form factor and trip characteristics match your panel’s requirements to maintain safe, code-compliant protection.

Practical tips from field use

• Keep the part number handy (HDA36150U31XAABCSJYP) when ordering replacements to ensure exact fit and performance.
• Coordinate with your panel labeling to confirm the breaker’s trip curve and rating align with the connected load profile.
• Store spares in a clean, dry environment to preserve contact integrity and mounting hardware for quick field replacements.

Designed for professionals who demand dependable, OEM-grade protection, the Square D HDA36150U31XAABCSJYP 150A 3-Pole 600 V circuit breaker delivers consistent performance in demanding 3-phase electrical systems. Add this genuine part to your inventory to ensure seamless protection, easy maintenance, and long-term reliability for your critical circuits.