Square D HGA36070UJ 70A 3-Pole 600 V Circuit Breaker

Meet the Square D HGA36070UJ, a purpose-built 70-amp, 3-pole circuit breaker engineered for reliable protection in 600-volt, three-phase electrical systems. Designed to integrate seamlessly with Square D panels, this device delivers precise overcurrent protection to keep motors, distributors, and auxiliary circuits running smoothly while guarding against overloads and short circuits.

Key specifications

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HGA36070UJ

Why this three-pole, 600 V breaker stands out

• Precision for three-phase protection: The 3-pole design is optimized for balanced protection across all phases, reducing the risk of uneven loads and potential equipment damage.
• Consistent performance in demanding environments: Built to handle higher voltage applications, it provides dependable interruption capabilities where it matters most.
• Seamless compatibility with Square D panels and systems you already rely on, helping you minimize fitment guesswork during upgrades or replacements.

Ideal use cases

• Protection for 3-phase distribution circuits in commercial and light industrial panels
• Motor control and equipment circuits that require reliable 70 A protection at 600 V
• Spare or replacement part for established Square D panel infrastructure

Installation and compatibility tips

• Confirm that your panel is designed to accept the HGA36070UJ and that the bus connection matches the breaker’s mounting style
• Match the breaker's current rating and voltage with the protected circuit to ensure proper protection without nuisance trips
• Follow all applicable electrical codes and manufacturer installation guidelines to ensure safe and compliant operation

Maintenance and safety considerations

• Periodically inspect the breaker for signs of wear, corrosion, or thermal damage
• Test the protection mechanism during routine service checks to verify reliable tripping behavior
• Replace only with the same part number (HGA36070UJ) to preserve protection characteristics and panel compatibility

For professionals upgrading or stocking parts in 600-volt, three-phase systems, the Square D HGA36070UJ 70A 3-Pole 600 V Circuit Breaker delivers dependable, site-ready protection with a straightforward fit into existing Square D installations.