Square D HGA36125SKYP 125A 3-Pole 600 V Circuit Breaker

Introducing the Square D HGA36125SKYP 125A 3-Pole 600 V Circuit Breaker—a purpose-built overcurrent protection device designed for 3-phase electrical systems. This 125-amp breaker is built to interrupt fault currents promptly, safeguarding wiring and connected equipment in industrial and commercial panels.

With three poles, it protects all phases in a 3-phase distribution, helping keep motor loads, feeders, and distribution circuits balanced and safe. The 600 V rating expands its use to higher voltage applications typical in industrial facilities, making it a versatile choice for service panels and switchgear that require reliable protection at elevated voltages.

Key specifications

• Current rating: 125 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HGA36125SKYP
• Brand/Series: Square D HGA

Why this model stands out

The HGA36125SKYP is designed to integrate with Square D panels that accept HGA-type breakers. It delivers reliable protection for multi-phase circuits without adding complexity to your panel layout. Ideal for mid-size feeders and motor control circuits in light industrial settings, this breaker helps prevent damage from overloads and short circuits in a straightforward, dependable form factor.

Practical use cases

Use this 125 A, three-pole breaker to protect: - 3-phase motor feeders in manufacturing equipment - Main distribution feeders in commercial panelboards - 3-phase lighting and power distribution circuits in warehouses and workshops

Installation and compatibility tips

Before installing, confirm that your Square D panel accepts HGA-series breakers and that the panel’s labeling lists HGA as a compatible interrupting device. Follow standard electrical installation practices, ensuring proper torque on terminals and secure mounting within the panel bus. If you’re replacing an existing breaker, verify that the new unit’s frame and trip characteristics align with the panel’s design and the circuit’s load requirements.