Square D HDA36150U43XAABCSH 150A 600 V Circuit Breaker

The Square D HDA36150U43XAABCSH is a rugged 150 A, 600 V circuit breaker designed to safeguard essential power distribution in demanding commercial and industrial environments. Identified by Part Number HDA36150U43XAABCSH, this unit integrates seamlessly with Square D panels and enclosures, delivering dependable protection for large feeders and critical circuits.

Who benefits most? facilities with heavy electrical loads, including commercial buildings with substantial subpanel distributions, manufacturing floors with sizeable motor workloads, and control rooms where consistent power protection is non-negotiable. This breaker helps minimize downtime by reliably interrupting overloads and fault currents before damage occurs.

• Current rating: 150 A — supports large feeders and high-demand circuits without needing multiple devices.
• Voltage rating: 600 V — suitable for mid- to high-voltage distribution scenarios common in larger installations.
• Exact part identity: HDA36150U43XAABCSH — precise model available for easy ordering, stocking, and field replacement.
• Brand reliability: Square D — part of a trusted family of protective devices designed for compatibility and long-term serviceability within Square D ecosystems.
• Protective function: overload and short-circuit interruption — engineered to quickly clear faults, helping to protect wiring, panels, and connected equipment.

Practical use cases you can rely on:

• Main feeder protection in large commercial buildings where subpanels distribute HVAC, lighting, and power.
• Industrial control panels and equipment rooms that demand high-capacity, dependable circuit protection.
• Upgrades or retrofits where matching a proven 150 A, 600 V device streamlines panel compatibility and serviceability.

Why this model matters in real-world terms: selecting the HDA36150U43XAABCSH provides a proven balance of high-current capability and broad voltage compatibility, reducing the need for multiple smaller breakers and simplifying maintenance with a recognized Square D solution. In everyday operation, you’ll benefit from predictable tripping behavior, streamlined replacement workflows, and the confidence that your distribution protected by a trusted, organization-wide standard product.