Square D HDA36150U43XAABC 150A 3-Pole 600 V Circuit Breaker

Square D HDA36150U43XAABC 150A 3-Pole 600V Circuit Breaker is a rugged protection solution designed for robust three‑phase power networks. With a 150 A current rating and a 600 V voltage rating across three poles, this breaker delivers dependable overcurrent protection for commercial and industrial electrical systems.

Part number: HDA36150U43XAABC. Built to handle demanding environments, it provides balanced protection across all three phases, helping prevent damage to wiring, motors, and other critical equipment in three‑phase distributions.

Key specifications

• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36150U43XAABC
• Brand: Square D

Why this model stands out

• Designed specifically for three‑phase circuits, ensuring consistent protection across all three live conductors.
• Rugged construction suitable for industrial panelboards, feeders, and other high‑demand applications.
• Authentic Square D reliability in a compact form factor that integrates smoothly into compatible distribution panels.

Ideal use cases

• Protection for three‑phase motors and equipment in manufacturing, processing plants, or HVAC installations.
• feeders and distribution circuits in commercial buildings with significant electrical loads.
• Primary protection for 3‑phase power trunks and large electrical panels where uptime matters.

Practical installation and care tips

• Install by a qualified electrician and verify compatibility with your panel’s enclosure and trip characteristics.
• Ensure proper wiring and secure mounting to maintain reliable operation and ease of servicing.
• Consult local electrical codes for compliance and safety best practices when integrating into existing systems.

For reliable, industry‑standard protection of three‑phase power up to 600 V, the Square D HDA36150U43XAABC 150A 3‑Pole 600V Circuit Breaker combines precise current handling with durable design—delivering peace of mind for critical electrical infrastructure.