Square D HDA36150U44XAABCSH 150A 3-Pole 600 V Circuit Breaker

When your electrical system needs rugged, reliable protection for demanding three-phase applications, the Square D HDA36150U44XAABCSH delivers with precision. This 150 A, 3-pole circuit breaker is engineered to guard circuits up to 600 V, helping to prevent overloads and short circuits from cascading into costly downtime.

• Part Number: HDA36150U44XAABCSH
• Current rating: 150 A
• Poles: 3 (three-phase protection)
• Voltage rating: 600 V
• Brand: Square D

This model is specifically suited for industrial and commercial power distribution where three-phase feeders require solid, balanced protection. With its 3-pole design, all three phases are simultaneously isolated in the event of an overload or fault, helping to maintain system integrity and reduce the risk of equipment damage.

Ideal use cases

• Protecting 3-phase feeders in manufacturing lines and heavy machinery circuits up to 150 A
• Serving as a main or sub-disconnect in 600 V distribution panels
• Providing reliable fault isolation in commercial or light industrial environments

Why this Square D circuit breaker stands out: it pairs a robust 150 A rating with a three-pole configuration and a 600 V ceiling, enabling safe operation across a range of higher-voltage industrial systems. It’s a purpose-built solution for technicians and engineers who demand dependable protection that aligns with established Square D standards.

Practical notes for deployment: verify compatibility with your Square D panel or enclosure, follow standard electrical code guidelines, and ensure proper torque on terminations during installation. For any replacement scenario, keep the part number HDA36150U44XAABCSH handy to ensure a precise fit and consistent protection across all three phases.