Square D HGA36100UA 100A 600 V Circuit Breaker

Meet the Square D HGA36100UA 100A 600 V Circuit Breaker — a purpose-built protective device from Square D that shields your electrical system from overloads and short circuits. Whether you’re outfitting a commercial panel or upgrading an industrial distribution, this 100-amp breaker delivers dependable protection for the circuits that matter most.

Key specifications you can trust

• Current rating: 100 A
• Voltage rating: 600 V
• Part number: HGA36100UA
• Brand: Square D

Why this model matters

• Designed to protect feeders and branch circuits in panels requiring a 100-amp device at up to 600 volts.
• Part of the HGA family, offering a consistent fit and predictable performance within Square D electrical systems, which helps simplify replacements and maintenance.
• Durable construction built to withstand typical commercial and industrial environments, delivering reliable opening and tripping behavior when faults occur.

Practical use cases

• Upgrading a legacy panel to ensure precise 100 A protection for critical circuits such as HVAC feeds, lighting distribution, or machine control lines.
• In new installations where a robust 100 A, 600 V circuit breaker is required to safely power equipment and distribution circuits.
• Replacement for worn-out or incompatible breakers in Square D systems, maintaining a cohesive protection strategy across the panel.

Installation and care tips

• Always de-energize and lock out power before installing or removing the breaker.
• Verify compatibility with your panel labeling and any existing HGA components to ensure a proper fit.
• Follow manufacturer guidelines for torque, wiring, and inspection intervals to maintain safe operation and reliable performance.