Square D HDA36125SPYP 125A 3-Pole 600 V Circuit Breaker

For professionals safeguarding three-phase power, the Square D HDA36125SPYP 125A 3-Pole 600 V Circuit Breaker stands as a reliable, drop-in solution for industrial panels. Part of the HDA series, this breaker is built to protect feeders and equipment from overloads while fitting neatly into Square D distribution gear.

Designed for demanding 3-phase systems

With a 125 A rating across 3 poles and a 600 V maximum system voltage, it covers mid-size commercial and light industrial applications where consistent protection is critical. The 3-pole configuration ensures balanced protection across all phases and simplifies wiring in crowded panels.

Why choose the HDA36125SPYP?

• Exact fit for Square D panels: Part number HDA36125SPYP guarantees compatibility with existing Square D installations and aligns with the HDA family’s mounting and terminal layout.
• Reliable three-phase protection: Three poles safeguard three-phase feeders, reducing the risk of unbalanced loads and equipment damage.
• High-voltage readiness: Rated up to 600 V, this breaker supports a wide range of industrial and commercial electrical systems.
• Simple maintenance and replacement: As a standard Square D component, it’s straightforward to swap in during routine maintenance or panel upgrades.

Practical use cases

Use this breaker as a main or branch protective device in service panels, motor-control centers, or feeders in warehouses, light manufacturing, and large facilities where three-phase power is the norm. It’s ideal for replacing a failed HDA series unit or stocking a ready-to-install spare to minimize downtime.

Specifications at a glance

• Current rating: 125 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36125SPYP
• Brand: Square D

Choosing the right circuit breaker is about matching the panel design, required protection current, and the voltage environment. The Square D HDA36125SPYP delivers a precise fit and dependable performance for three-phase systems, helping keep electrical infrastructure safe, stable, and up to the task.