Square D HGA36110SN 110A 3-Pole 600 V Circuit Breaker

The Square D HGA36110SN is a robust 110 A, three-pole circuit breaker engineered to safeguard three-phase electrical circuits up to 600 V. With the exact part number HGA36110SN, this Square D device delivers dependable protection where reliability matters most—industrial panels, commercial distributions, and any system requiring coordinated, multi‑phase interruption.

• Current rating: 110 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HGA36110SN
• Brand: Square D

Why this model stands out

Designed for three-phase protection, the HGA36110SN ensures that all three phases trip together when an overload or fault occurs. This coordinated action minimizes the risk of unbalanced loads that can damage equipment or create unsafe conditions. Built by Square D, a name trusted in electrical protection, this breaker provides the reliability required in demanding environments—from manufacturing floors to data centers with high-voltage infrastructure.

Ideal use cases

The 110 A, 3-pole configuration makes this breaker a strong fit for:

• Three-phase feeders in commercial or light-industrial distributions
• Motor circuits and HVAC distributions where up to 110 A per branch is needed
• Panelboard protection in systems operating at voltages up to 600 V

How it helps you operate more safely and efficiently

• Prevents cascade failures by guaranteeing simultaneous trip of all three phases
• Protects wiring and equipment from overload, helping to extend service life
• Facilitates straightforward replacement with a like-for-like Square D part to maintain panel integrity

Practical installation and maintenance tips

• Verify compatibility with your Square D panel or enclosure and confirm the HGA series designation matches your system requirements
• Ensure correct electrical rating alignment—this unit handles up to 600 V and 110 A
• Follow standard safety and torque guidelines when securing terminals, and replace if you notice signs of wear or trip events
• Keep the exact part number (HGA36110SN) handy for future replacements or service records