Square D HDA36070UNYP 70A 3-Pole 600 V Circuit Breaker

Experience reliable 70 A overcurrent protection for demanding three‑phase systems with the Square D HDA36070UNYP 70A 3-Pole 600 V Circuit Breaker. Designed for industrial-grade distribution, this part-numbered unit delivers coordinated protection across all three phases in panels rated for 600 V operation.

With a 3‑pole design, this breaker interrupts all phases simultaneously, enhancing safety during fault conditions and simplifying maintenance procedures. The 600 V rating makes it suitable for commercial and industrial equipment applications where higher voltage distribution is common, such as motors, conveyors, pumps, and large HVAC systems.

• Current rating: 70 A
• Pole count: 3
• Voltage rating: 600 V
• Part number: HDA36070UNYP
• Brand: Square D

Ideal for upgrading or replacing in commercial and industrial panels that require robust 3‑phase protection at 600 V, including motor control circuits, processing equipment, and heavy-duty electrical feeders. It fits Square D installations that support the HDA line, offering a dependable, long‑lasting solution for critical infrastructure.

What problems it solves — it provides reliable interruption of fault currents across all three phases, helping protect wiring, motors, and sensitive equipment from overloads and short circuits. By ensuring synchronized trip across phases, it reduces the risk of unbalanced faults and simplifies safety shutoffs during maintenance or emergency events.

Practical tips for use — verify panel compatibility (600 V capability and 3‑pole configuration) before installation, and follow all applicable electrical codes and manufacturer instructions. Keep a spare HDA36070UNYP on hand for fast replacement in mission-critical environments, and document the part number to ensure you’re matching the exact specification when ordering replacements.