Square D HDA36110US 110A 3-Pole 600 V Circuit Breaker

The Square D HDA36110US is a robust, three‑pole circuit breaker engineered for serious 3‑phase power protection. With a 110 A rating and a 600 V maximum, this unit is purpose‑built for industrial panels, switchgear, and three‑phase distribution environments where reliable overcurrent protection is non‑negotiable.

Why choose the Square D HDA36110US? This model integrates seamlessly into compatible Square D panel systems, providing precise, dependable interruption for every phase in up to 600 V circuits. The 3‑pole design ensures balanced protection across all live conductors, reducing the risk of uneven load conditions and selective tripping that can disrupt critical equipment.

Key benefits and practical advantages

• Three‑pole protection safeguards all phases in 3‑phase feeders, promoting consistent trip behavior and safer equipment downtime.
• 110 A current rating is ideal for medium to large feeders, enabling strong protection without unnecessary nuisance trips during normal operation.
• 600 V voltage rating expands the range of compatible industrial applications, including higher‑voltage distribution schemes common in manufacturing and facilities.
• Reliable Square D lineage with a clear part number (HDA36110US) supports straightforward procurement, maintenance, and panel compatibility for ongoing system reliability.

Ideal use cases

• Protection for three‑phase feeders in industrial control panels and switchgear
• Distribution panel protection for manufacturing lines and heavy machinery
• Electrical installations where coordinated tripping across all phases minimizes equipment stress during faults

Specifications at a glance

• Current rating: 110 A
• Pole configuration: 3
• Voltage rating: 600 V
• Part number: HDA36110US

For professionals designing or maintaining three‑phase power systems, the Square D HDA36110US offers precise protection, straightforward integration, and the reliability you expect from a trusted industry standard. It’s the practical, no‑nonsense choice when uptime and safety matter most.