Square D HGA36100U44XAABCSK 1000A 3-Pole 600 V Circuit Breaker

Meet the Square D HGA36100U44XAABCSK, a high-capacity circuit breaker built for demanding three‑phase power systems. With a 1000 A current rating, three poles, and a 600 V maximum voltage, this model delivers dependable protection for large industrial panels and commercial facilities where uninterrupted power and quick fault isolation matter most. The exact part number—HGA36100U44XAABCSK—ensures precise compatibility when replacing a failed breaker or upgrading existing protection in your Square D lineup.

• Current rating: 1000 A
• Poles: 3 (three-pole design for 3-phase circuits)
• Voltage rating: 600 V
• Part number: HGA36100U44XAABCSK

Why this matters: In systems where heavy motors, conveyors, or large lighting and HVAC loads share a common feed, a 3-pole unit ensures simultaneous disconnection of all phases during a fault. The 600 V rating supports typical industrial and commercial distribution environments, helping to protect wiring, equipment, and personnel by interrupting current quickly and reliably when anomalies occur.

Ideal use scenarios:

• Main service disconnects for industrial facilities with high-load feeders
• Three-phase distribution panels in manufacturing plants and large workshops
• Upgrading protection in existing Square D installations where a 1000 A, 3-pole solution is required

Designed for straightforward integration, this breaker helps you maintain system uptime and safety without compromising on protection standards. Whether you’re replacing a worn unit or stocking parts for scheduled maintenance, the HGA36100U44XAABCSK provides the exact specifications needed to keep your three-phase power running smoothly.