Square D HDA36125SLYP 125A 3-Pole 600 V Circuit Breaker

The Square D HDA36125SLYP is a dependable three-pole circuit breaker designed to protect 3-phase electrical systems up to 600 volts. With a 125 A rating, this device provides solid overcurrent protection for feeders and connected equipment in commercial and light industrial environments, helping to minimize downtime and electrical faults.

Part Number HDA36125SLYP embodies Square D’s commitment to reliable, consistent performance in demanding panelboards and enclosures. This 125A, 3-pole breaker is crafted for compatibility with standard Square D installations, making replacements and upgrades straightforward for existing systems that rely on three-phase protection at up to 600 V.

Key Benefits

• Three-pole protection for 3-phase systems: Safely interrupts fault currents across all three phases in 600V networks, guarding motors, drives, and heavy loads.
• 125 A rated performance: Suited for feeders and branch circuits that require reliable protection without unnecessary trips.
• Industrial-leaning durability: Built to endure frequent operation in distributed electrical panels, switchgear, and panelboards common in commercial settings.
• Seamless Square D compatibility: Engineered to align with Square D panel layouts and mounting standards, enabling straightforward installations and replacements.

Ideal Use Cases

• Feeder protection for 3-phase equipment such as pumps, conveyors, and HVAC systems in commercial facilities.
• Protection for main or branch circuits in data centers, manufacturing floors, and large warehouses where reliable 3-phase interruption is essential.
• Replacement or upgrade in existing Square D electrical systems to restore dependable, coordinated circuit protection.

What Sets It Apart

• Consolidated 3-phase protection in a single device, simplifying wiring and improving coordination across three conductors.
• Consistent trip characteristics and mounting compatibility within the HDA family, reducing stocking complexity for maintenance teams.
• Designed to perform reliably in environments where 600 V systems are commonplace, providing clear protection margins for connected equipment.

Care and Installation Tips

• Confirm compatibility with your Square D panelboard or enclosure before installation.
• Ensure system voltage aligns with the 600 V rating of the breaker to prevent misoperation.
• Periodically inspect connections and mounting to maintain optimal performance and minimize heat buildup.