Square D HGA36100USYP 100A 3-Pole 600 V Circuit Breaker

Meet the Square D HGA36100USYP 100A 3-Pole 600V Circuit Breaker—the dependable overcurrent protection you need for demanding three-phase electrical systems. As the part number HGA36100USYP, this breaker is built to reliably interrupt fault currents and protect wiring and equipment in commercial and industrial environments.

Key specifications

• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HGA36100USYP
• Brand: Square D

Why this Square D breaker stands out

Designed to integrate with three-phase distribution setups, the HGA36100USYP offers robust protection for feeders and branch circuits operating up to 600 V. The three-pole configuration ensures simultaneous disconnection of all phases, helping prevent unsynchronized faults that can damage equipment or create safety hazards. This specificity matters when protecting motors, compressors, and other three-phase loads in industrial or large commercial applications.

Ideal use cases

• Three-phase motor circuits in manufacturing lines or HVAC systems
• Branch feeders for commercial equipment powered from distribution panels
• Protecting downstream equipment from overcurrent events in 600 V systems

Compatibility, installation, and safety

Use in Square D panel environments where a 3-pole, 100 A breaker is required for circuits up to 600 V. Before installation, confirm that the panel and bus configuration support this HGA series device and follow all standard electrical installation practices. If in doubt, consult a qualified electrician to ensure proper torque, mounting, and labeling for safe operation.

Practical tips for maximum reliability

• Keep a spare HGA36100USYP on hand for quick replacement on critical lines.
• Label protected circuits clearly to facilitate rapid fault isolation during maintenance.
• Combine with a regular inspection routine to verify panels and breakers remain within spec for your environment.