Square D HDA36125UDYP 125A 3-Pole 600 V Circuit Breaker

Meet the Square D HDA36125UDYP 125A 3-Pole 600 V Circuit Breaker—the dependable protection backbone for 3-phase electrical systems. Built for commercial and light industrial environments, this breaker delivers reliable overcurrent protection for feeders and branch circuits operating up to 600 V.

Key specifications

• Current rating: 125 A
• Poles: 3 (three-pole)
• Voltage rating: 600 V
• Part number: HDA36125UDYP
• Brand: Square D

Why this 125A 3-Pole 600V breaker stands out

• Three-pole design tailored for 3-phase distribution, providing balanced protection across all phases and reducing the risk of uneven loading.
• 125 A rating makes it well-suited for mid-to-high current feeders, helping protect wiring and equipment from overloads and short circuits.
• Engineered by Square D, a long-standing name in electrical protection, offering predictable trip characteristics and consistent performance.
• Compact, compatible solution for replacing or upgrading breakers in appropriate Square D panels and distribution setups.

Ideal use cases

• Feeder protection for 3-phase distribution panels in commercial or light industrial spaces
• Replacement or upgrade for existing Square D installations requiring 125 A, 3-pole, 600 V protection
• Protection for 3-phase circuits powering HVAC equipment, large conveyors, or other heavy-load electrical circuits

Installation and compatibility

Designed to integrate with compatible Square D panels and distribution systems, the HDA36125UDYP provides a straightforward path to restore or establish reliable overcurrent protection. When selecting this breaker, ensure it matches your panel’s configuration and upgrade path to maintain proper system coordination.

Practical guidance for best results

• Plan protection coordination with upstream devices to minimize downtime during faults.
• Keep essential spare breakers on hand for quick maintenance in critical locations.

Choosing the Square D HDA36125UDYP means opting for a proven, 3-phase protection solution that confidently covers circuits up to 600 V at 125 A. It’s a precise fit for applications needing solid, reliable 3-pole protection from a trusted industry standard.