Square D HDA36090UA 90A 3-Pole 600 V Circuit Breaker

Meet robust protection for three‑phase power systems with the Square D HDA36090UA 90A 3-Pole 600 V Circuit Breaker. Built to interrupt fault currents quickly while running steady under normal loads, this device is ideal for commercial and light industrial panels that demand dependable overcurrent protection at higher voltages.

• Precise 90 A protection ensures circuits are safeguarded against overload without unnecessary trips.
• 3‑Pole configuration provides balanced protection across all three phases, reducing the risk of neutral and phase imbalances in three‑phase distribution.
• 600 V maximum rating supports typical industrial power distribution environments, keeping equipment safe from overvoltage scenarios.
• Exact part number HDA36090UA guarantees compatibility with Square D panels and devices designed to accept HDA‑series breakers.

Use cases include service entrances and distribution panels in manufacturing lines, commercial electrical rooms, and data-center ancillary infrastructure where reliable three‑phase protection is essential. It’s particularly well‑suited for systems that operate near 600 V and require a clear, stable trip response to fault conditions.

• Verify that your panel accepts HDA‑series breakers and that the bus configuration supports a 3‑pole device.
• Pair with load calculations to ensure the 90 A rating aligns with the circuit being protected.

Specifications at a glance

• Brand: Square D
• Part number: HDA36090UA
• Current rating: 90 A
• Poles: 3
• Voltage rating: 600 V
• Type: Circuit Breaker (3‑pole)