Square D HJA36070SH 70A 3-Pole 600 V Circuit Breaker

Meet the Square D HJA36070SH 70A 3-Pole 600 V Circuit Breaker—built to safeguard three‑phase power in demanding environments. With a 70 amp rating and a maximum 600 volts, this unit protects motor controls, pumps, conveyors, and other heavy‑duty equipment in commercial and industrial settings. The three-pole configuration ensures all live conductors trip together, reducing the risk of arc‑flash and collateral damage during faults.

Designed for compatibility with Square D panels that accept HJA‑style breakers, the HJA36070SH offers a straightforward, reliable upgrade or replacement option. Its sturdy construction and single‑unit design streamline installation and maintenance, helping minimize downtime while delivering consistent protection where it counts.

Ideal use cases

• Protection for three‑phase 600V distributions in manufacturing lines and industrial facilities
• Motor control centers and equipment racks requiring a dedicated 70A, 3‑pole protection device
• Replacement for aging breakers in Square D panels that support the HJA series

Why this matters

Choosing a breaker with the correct rating and configuration is essential for reliable operation and safety. The HJA36070SH provides appropriate interrupting capability for up to 600 V systems and aligns with Square D’s HJA family, delivering predictable performance and vetted protection for your critical equipment.

Practical considerations

• Ensure panel compatibility with HJA‑series breakers before installation
• Have a licensed electrician perform installation and testing to confirm proper trip operation and isolation
• Document and label the protection scheme as part of routine preventive maintenance