Square D HJA36070UN 70A 3-Pole 600 V Circuit Breaker

The Square D HJA36070UN 70A 3-Pole 600 V Circuit Breaker is built for demanding three-phase electrical systems, delivering reliable overcurrent protection when it matters most. Designed to handle feeder lines and motor circuits up to 600 volts, this 70 A breaker helps safeguard your equipment, wiring, and panels from overloads and short circuits.

Key specifications

• Part number: HJA36070UN
• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V

Ideal uses and scenarios

• Three-phase motor control circuits in commercial or light industrial settings
• Branch circuits within Square D panelboards and compatible enclosures
• Electrical distributions that require dependable protection for each phase in up to 600 V systems

Why choose this model

• Direct compatibility with Square D panel ecosystems, simplifying replacement and service.
• Dedicated 3-pole configuration ensures synchronized protection across all phases in a 3-phase setup.
• Clear, decisive protection at a 70 A rating, balancing responsiveness with practical load handling for motors and equipment.

Practical installation and care

• Confirm panel compatibility: ensure the circuit breaker is suitable for use in your Square D panelboard or enclosure.
• Power down the system before replacement or installation to prevent arcing and ensure safety.
• Follow the manufacturer’s torque and installation guidelines to secure connections and maintain reliable operation.

With the Square D HJA36070UN 70A 3-Pole 600 V Circuit Breaker, you gain a robust, straightforward solution for protecting three-phase circuits, motors, and feeders in demanding environments. This part is purpose-built to deliver dependable performance where reliability matters most, helping you maintain safer, more efficient electrical distributions.