Square D HDA36150UH 150A 3-Pole 600 V Circuit Breaker

Power your three-phase distribution safely with the Square D HDA36150UH 150A 3-Pole 600 V Circuit Breaker. Built for demanding industrial panels, this unit delivers reliable overcurrent protection for high-current, 3‑phase circuits up to 150 amps and a 600-volt maximum rating.

With an authentic Square D part number HDA36150UH, this breaker fits standard Square D panels and replacements, helping you maintain system integrity and simplify maintenance when you need to refresh a failed device or upgrade a circuit segment.

• 150 A current rating provides robust protection for heavy-load feeders and motor circuits without nuisance trips under normal startup surges.
• Three-pole design ensures balanced protection for three-phase systems, reducing the risk of unequal phase loading and arc faults.
• 600 V rating supports higher-voltage distribution common in commercial and industrial environments, enabling safer, code-compliant operation.
• Authentic Square D compatibility and part number clarity simplify ordering, stocking, and cross-reference with existing Square D components in your panel.
• Durable construction designed for frequent switching and long service life in harsh electrical environments.

Ideal applications

Designed for three-phase feeders in industrial panels, machine rooms, HVAC systems, power distribution enclosures, and data-center or manufacturing environments where dependable protection at higher current is essential.

Why choose this breaker?

Choosing the HDA36150UH means selecting a solution that aligns with your existing Square D ecosystem, ensuring compatibility and predictable performance. It offers intentional, spec-aligned protection for up to 150 A at 600 V, helping you safeguard equipment, minimize downtime, and maintain safety compliance.

Practical tips

• Verify that your panel labeling and enclosure rating match a 3-pole, 600 V device before installation.
• Stock the exact part number HDA36150UH to ensure replacement accuracy and avoid compatibility issues during maintenance.
• Consider future expansion: if you anticipate higher loads, plan for breakers with higher ampacity or add separate protection stages.