Square D HDA36110UDYP 110A 3-Pole 600 V Circuit Breaker

The Square D HDA36110UDYP 110A 3-Pole 600 V Circuit Breaker delivers dependable three-phase overcurrent protection for demanding electrical installations. Engineered for reliability in commercial and industrial panels, this 110 amp device guards feeders, motors, and distribution circuits from unexpected faults while enabling quick, safe interruption of power when necessary.

Key reasons to choose the Square D HDA36110UDYP include its precise 110 A current rating, three poles for true three-phase protection, and a 600 V voltage rating that suits many industrial power systems. Built to meet rigorous standards, this breaker is a trusted choice for protecting panelboards and critical equipment from overloads and short circuits, helping to minimize downtime and equipment damage.

What makes this 110A, 3-Pole 600V breaker stand out

• Clear three-phase protection: With three poles, it provides balanced, synchronized interrupting capability across all phases, reducing the risk of phase imbalance that can harm motors and drives.
• Industrial-grade reliability: Designed to endure the demands of industrial environments, delivering consistent performance over time in panelboard configurations common to manufacturing floors, HVAC plants, and power distribution closets.
• Broad voltage compatibility: Rated for up to 600 V, making it suitable for a wide range of commercial and light industrial power systems that operate on higher-voltage distribution networks.
• Standardized part number for easy replacement: Part number HDA36110UDYP provides a clear, compatible option when upgrading or stocking replacements for existing Square D installations.

This circuit breaker is ideal for protecting feeders that power three-phase equipment such as motors, conveyors, pumps, compressors, and large HVAC systems. It’s also well-suited for panelboard feeders in equipment rooms, data center racks, and controlled distribution lines where reliable interruption is essential to safeguarding personnel and assets.

Practical considerations to maximize performance:

• Compatibility checks: Confirm that your panelboard and mounting arrangements support the HDA-series form factor and 3-pole 600 V protection. When replacing older devices, ensure the electrical characteristics align with your existing wiring and bus configurations.
• Coordination with protection schemes: Use this 110 A 3-Pole breaker's rating to coordinate with upstream and downstream protection to minimize unnecessary outages while still preventing damage from faults.
• Maintenance mindset: For long-term reliability, conduct periodic inspections of connections and enclosure integrity, and verify that the breaker remains clean, dry, and free of dust or corrosion that could affect performance.

Whether you’re upgrading an aging panel, implementing a new three-phase distribution network, or consolidating protection for a critical motor line, the Square D HDA36110UDYP 110A 3-Pole 600 V Circuit Breaker is a straightforward, dependable choice. It combines the familiarity of Square D engineering with a precise protection profile that helps keep systems running smoothly, safely, and with minimal disruption.