Square D HDA36110SR 110A 3-Pole 600 V Circuit Breaker

The Square D HDA36110SR is a rugged, 110-amp circuit breaker engineered for demanding 3-phase electrical systems. With a 3-pole design and a 600 V rating, this unit provides reliable protection for larger commercial or light industrial feeders, helping to safeguard equipment and maintain system integrity in demanding environments. Part Number HDA36110SR is your clear indicator of compatibility with Square D panels designed for this family of breakers.

Key features and benefits

• 110 A current rating delivers robust protection for sizeable 3-phase circuits, preventing overloads and reducing the risk of damage to downstream equipment.
• 3-pole configuration offers complete phase protection for three-phase distribution, helping maintain balanced loads and stable system operation.
• 600 V voltage rating suitability for higher voltage installations common in commercial and industrial settings, enabling safe interruption for demanding applications.
• Part Number HDA36110SR ensures precise identification and straightforward replacement within compatible Square D installations.
• Brand trust from Square D, a long-standing name in electrical protection and distribution—built to perform when it matters most.

Ideal applications

• 3-phase power distribution panels in commercial buildings and light industrial facilities requiring reliable 110 A protection.
• feeders for motors, compressors, and other three-phase equipment where a clear, decisive trip helps minimize downtime.
• Panel boards and switchgear designed to accommodate HDA-series breakers, enabling consistent protection across your electrical system.

Why choose this model

This breaker pairs a robust amperage rating with a practical 3-pole design, making it well-suited for mid-to-large load centers. Its 600 V capability expands its utility beyond small commercial setups, giving you a single, dependable solution for higher-voltage 3-phase circuits. By selecting the HDA36110SR, you’re choosing a known-quantity protection device that aligns with Square D’s engineering standards and installation practices, helping you maintain compliance and predictability in your electrical distribution.

Usage tips and considerations

• Verify enclosure and panel compatibility with HDA-series breakers to ensure correct mounting and electrical fit.
• Match the breaker’s current rating to the calculated full-load current of the protected 3-phase circuit to prevent nuisance trips while maintaining protection.
• Plan for future expansion by confirming available space and ensuring downstream conductors and connectors meet safety and code requirements for 600 V systems.