Square D HDA36125SHYP 125A 3-Pole 600 V Circuit Breaker Potential Transformer

Meet the Square D HDA36125SHYP 125A 3-Pole 600 V Circuit Breaker — a rugged, reliable protection device designed to guard three-phase power distribution in demanding environments. This 125 A breaker delivers dependable interruption of fault currents on all three phases, while its 600 V rating covers a broad range of commercial and industrial circuits. With its part number HDA36125SHYP, it's a precise, plug-ready component for Square D panels and enclosures, supporting streamlined installation and consistent protection across your electrical system.

Key specifications

• Current rating: 125 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36125SHYP
• Brand: Square D

Why choose this 3-pole breaker

Three-pole configuration ensures simultaneous disconnection of all phases, delivering coordinated protection for three-phase motors, feeders, and equipment. The 125 A rating matches common mid-size loads, providing a safe, scalable solution for growing systems. The 600 V rating expands its applicability across a wide range of industrial and commercial installations, from manufacturing lines to large HVAC setups.

Ideal use cases

• Three-phase motor circuits in manufacturing and processing facilities
• Panel boards and distribution feeders in commercial buildings
• HVAC equipment and heavy machinery circuits

Practical installation and maintenance tips

• Ensure compatibility with your Square D panel or enclosure and verify the mounting footprint before installation.
• Follow proper electrical torque specifications when tightening terminations to maintain reliable connections.
• For systems employing protection relays and potential transformers, integrate this breaker as a robust protective device within your protection scheme.
• Always de-energize equipment and follow safety protocols during installation or service.

Bring precise protection to your three-phase distribution with the Square D HDA36125SHYP 125A 3-Pole 600 V Circuit Breaker — a dependable choice for professionals who value reliability, compatibility, and straightforward maintenance.