Square D HDA36110UR 110A 3-Pole 600 V Circuit Breaker

Meet the Square D HDA36110UR—a dependable 110 A, 3-pole circuit breaker designed for 600 V three-phase systems. Built to protect power distribution and equipment in demanding commercial and light industrial environments, this device delivers reliable overload and short-circuit protection where it matters most.

Why this breaker stands out

• Three-pole protection ensures simultaneous disconnection of all live lines, reducing the risk of phase-to-phase faults and helping prevent equipment damage.
• 110 A current rating provides robust protection for mid-size feeders, motors, and distribution circuits without unnecessary trips.
• 600 V voltage rating makes it suitable for typical industrial and commercial three-phase networks, aligning with standard panelboard configurations.
• Durable design from Square D, built to withstand the rigors of busy electrical rooms and frequent maintenance cycles.
• Clear part identification by part number HDA36110UR simplifies ordering, stocking, and replacement in ongoing maintenance plans.

Who should consider this breaker

• Facilities managers and electricians maintaining three-phase 600 V distribution panels in manufacturing, processing facilities, or large commercial spaces.
• Technicians replacing worn or outdated protective devices on feeders and motor circuits that demand reliable, consistent performance.
• Project designers selecting protective devices for new builds or panel upgrades where a 3-pole, 110 A solution is appropriate.

How it solves real-world problems

• by ensuring all phases trip together on an overload or fault, reducing risk to personnel and downstream equipment.
• minimizes nuisance trips on normal startup surges, helping keep essential processes online.
• supports integration into standard Square D panels and compatible distribution setups that run on 600 V three-phase power.

Practical tips for use

• Verify system voltage and three-phase configuration to ensure the 600 V rating aligns with your network.
• Pair this breaker with compatible panelboards and conductors sized for 110 A protection to maintain overall system safety and reliability.
• Keep the part number (HDA36110UR) handy for ordering replacements or accessories during maintenance planning.

In summary, the Square D HDA36110UR delivers precise, three-pole protection at a practical 110 A rating for 600 V systems. It’s a deliberately chosen solution for professionals who demand dependable overcurrent protection, straightforward maintenance, and clear, field-ready specification signaling in three-phase applications.