Square D HDA36110UD 110A 3-Pole 600 V Circuit Breaker

Meet the Square D HDA36110UD 110A 3-Pole 600 V Circuit Breaker — a purpose-built protection device engineered to safeguard three-phase power systems in demanding commercial and industrial settings. As a genuine Square D part with the HDA36110UD designation, it delivers reliable overcurrent protection for circuits operating up to 600 V.

Designed for balanced, three-pole protection, this breaker handles up to 110 A of continuous current, making it an ideal choice for mid-range motor circuits, distribution feeds, and other 3-phase loads within compatible Square D panels. When integrated into your electrical distribution network, it helps prevent damage from overloads and short circuits, supporting safer operation and reduced downtime.

Key specifications at a glance

• Brand: Square D (by Schneider Electric)
• Part number: HDA36110UD
• Current rating: 110 A
• Poles: 3
• Voltage rating: 600 V

Ideal use cases

• Three-phase motor circuits in industrial environments requiring robust protection up to 110 A
• Main or branch protection in commercial electrical panels that use Square D components
• Replacement part for compatible Square D enclosures to maintain consistent protection and performance

Why this breaker stands out

Buying the HDA36110UD means staying within the Square D ecosystem, which helps ensure compatibility, predictable trip behavior, and straightforward maintenance. Its 3-pole design provides balanced protection across all three phases, which is crucial for preventing phase imbalances in motors and other 3-phase equipment. For facilities that rely on dependable, industry-standard protection for 600 V systems, this breaker offers a practical, long-term solution.

Practical tips for installation and maintenance

• Verify panel compatibility with the HDA36110UD as a replacement or upgrade part for your Square D distribution setup
• Confirm that the system voltage and load profile align with a 600 V, 3-pole, 110 A protection scheme
• Consult your panel’s documentation or a qualified electrician to ensure proper installation and safe commissioning