Square D HDA36100UAYP 100A 3-Pole 600 V Circuit Breaker

Introducing the Square D HDA36100UAYP 100A 3-Pole 600V Circuit Breaker—the dependable protection your three-phase electrical systems rely on. Built to safeguard feeders, motors, and panelboards in demanding environments, this breaker delivers reliable tripping performance when it matters most, helping to minimize damage from overloads and faults.

Key specifications at a glance:

• Current rating: 100 A
• Poles: 3 (three-pole design for three-phase circuits)
• Voltage rating: 600 V
• Part number: HDA36100UAYP
• Brand: Square D

Why this 3-pole, 100A, 600V circuit breaker stands out

Designed for three-phase electrical systems, the HDA36100UAYP provides coordinated protection across all phases with a single device. The 100 A rating makes it ideal for mid-to-high load feeders and motor circuits, while the 600 V rating supports a broad range of commercial and industrial applications. This isn’t a generic breaker—it's a Square D component chosen for its proven reliability, consistent trip characteristics, and compatibility with Square D panel ecosystems.

Where you’ll use it

• Industrial motor feeders and drive trains in manufacturing equipment
• Three-phase panelboards for commercial facilities, data centers, and processing plants
• Main distribution panels that require robust 3-phase protection without overcomplicating circuitry

Practical considerations and setup tips

To ensure optimal performance, pair this breaker with panels and bus assemblies in Square D ecosystems. Confirm that the installation environment aligns with the breaker's ratings (voltage, current, and three-pole configuration). When replacing an existing unit, verify that the new HDA36100UAYP matches the panel’s permitted breaker type and trip characteristics to maintain proper electrical coordination and safety margins.

Who benefits most

Electrical professionals and facilities managers sourcing a reliable 3-phase protection device for mid-to-large loads will appreciate the straightforward compatibility of the Square D HDA36100UAYP. It’s especially well-suited for environments where consistent performance across all three phases is critical to protecting equipment and maintaining uptime.

Why choose Square D for this application

With a lineage of trusted electrical protection solutions, Square D brings predictable performance, straightforward replacement, and durable construction. The HDA36100UAYP is not just a spec—it's a practical solution that supports safer, more resilient electrical distribution in demanding settings.