Square D HDA36070UH 70A 3-Pole 600 V Circuit Breaker

The Square D HDA36070UH is a purpose-built solution for safeguarding three-phase electrical systems. As a 70 A, 3-pole circuit breaker rated for up to 600 V, it provides solid, reliable overcurrent protection for demanding commercial and light-industrial applications.

Key specs at a glance

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36070UH
• Brand: Square D

Why this breaker stands out

Designed to integrate seamlessly with Square D panels and distribution systems, the HDA36070UH delivers dependable, predictable trip performance across three hot conductors. Its 3-pole design ensures simultaneous interruption of all phases, enhancing safety during maintenance and fault conditions. With a 600 V rating, it’s well-suited for higher-voltage commercial and industrial circuits, where robust protection makes a real difference in equipment longevity and uptime.

Ideal applications

• Three-phase motor feeders in manufacturing lines
• HVAC equipment and large commercial refrigeration circuits
• Industrial distribution panels and service equipment
• Power distribution for data centers and commercial facilities using 3-phase loads

Practical guidance for use

Install this 70 A, 3-pole breaker in compatible Square D panels designed to accept HDA-series devices. Verify that the panel and wiring are rated for 600 V operation and that the circuit load aligns with the 70 A rating to maintain safe, reliable protection. When a fault occurs, the breaker should trip cleanly, interrupting all phases to prevent damage to connected equipment and reduce arc fault risk.

With the Square D HDA36070UH in your electrical distribution setup, you gain precise overcurrent protection tailored for three-phase systems, clear trip indication, and durable, industry-standard performance you can trust for critical infrastructure and everyday operations alike.