Square D HJA36070USYP 70A 3-Pole 600 V Circuit Breaker

Introducing the Square D HJA36070USYP 70A 3-Pole 600 V Circuit Breaker—a trusted overcurrent protector crafted for reliable performance in commercial and industrial electrical systems. This is a genuine Square D component, designed to safeguard your three-phase power distribution by interrupting all three hot legs when a fault or overload is detected.

Designed for three-phase operation, this 70 A breaker provides coordinated protection across all phases, helping prevent damage to motors, drives, and feeders in demanding environments. With a 600 V voltage rating, it’s suited for higher voltage applications where durable, consistent protection is essential. The 3-pole configuration ensures that a fault on one leg won’t leave other conductors exposed, reducing the risk of equipment damage and downtime.

Key benefits

• Precise three-phase protection: Simultaneous interruption of all hot legs to prevent cascading faults in three-phase systems.
• High-voltage readiness: 600 V rating makes it compatible with a wide range of commercial and industrial power distribution setups.
• Reliable, genuine part: Part number HJA36070USYP ensures compatibility with Square D panels and HJA-series installation footprints.
• Durable protection for critical equipment: Ideal for safeguarding motors, pumps, compressors, and other high-demand loads from overloads and faults.

Ideal use cases

• Three-phase motor circuits in manufacturing, HVAC systems, and processing plants.
• feeders and distribution panels in commercial facilities where robust, high-current protection is required.
• Upgrade or replacement in panels that already employ Square D’s HJA-series devices to maintain consistent protection and compatibility.

Why choose this Square D breaker over alternatives

• Unified protection across all three phases minimizes risk of damage due to phase imbalance or single-leg faults.
• Compatibility with Square D panels and the HJA family streamlines installation, testing, and future servicing.
• 70 A rating targets moderately high-current circuits without oversizing, supporting efficient protection without nuisance tripping in properly loaded systems.

Installation and safety notes

As with all high-voltage protective devices, installation and maintenance should be performed by a licensed electrician familiar with Square D equipment and local electrical codes. Verify panel compatibility, confirm the HJA36070USYP part number matches your system requirements, and follow all manufacturer guidelines for mounting, wiring, and testing the breaker’s operation.

Protect your three-phase circuits with confidence using the Square D HJA36070USYP 70A 3-Pole 600 V Circuit Breaker—a purpose-built solution for durable, dependable electrical protection.