Square D HDA36070UR 70A 3-Pole 600 V Circuit Breaker

Protect three-phase power distribution with the Square D HDA36070UR 70A 3-Pole 600 V Circuit Breaker—a precise, rugged safeguard built for demanding commercial and industrial environments. This dedicated part (HDA36070UR) is designed to deliver dependable overcurrent protection for circuits common in higher-voltage, three-phase installations.

Key specifications at a glance

• Current rating: 70 A
• Poles: 3 (three-pole configuration for 3‑phase systems)
• Voltage rating: 600 V
• Part Number: HDA36070UR
• Brand: Square D

What this breaker does for you

In any three-phase setup, this 70 A circuit breaker acts as a critical line of defense against overloads and short circuits. The 3-pole design ensures protective coverage across all three phases, helping to prevent equipment damage, reduce downtime, and enhance electrical safety in demanding applications such as industrial machinery, distribution panels, and large commercial power circuits.

Ideal use cases

• Three-phase motor and equipment feeders in manufacturing or processing facilities
• Branch protection for commercial distribution panels handling moderate to high-load circuits
• Replacement component in Square D panel systems where a 70 A, 3-pole, 600 V protection device is required

Why choose the HDA36070UR in your system

• Precise compatibility—specifically engineered as a Square D component to integrate with its own line of panels and enclosures, helping ensure reliable alignment and electrical performance.
• Three-pole protection—covers all three phases in a single device, enabling safer distribution of balanced power and simplifying installation in 3‑phase networks.
• High-voltage capability—rated for up to 600 V, making it suitable for industrial and commercial power environments where higher voltages are common.
• Clear part identification—the HDA36070UR designation makes sourcing and replacement straightforward, reducing downtime when service is needed.

Installation and practical considerations

When integrating this breaker, verify that your panel or enclosure supports the HDA36070UR and that the circuit demands align with a 70 A, 3-pole solution. Follow standard electrical codes and manufacturer guidelines for mounting, wiring, and safety clearances. Regularly inspect connections and the overall condition of the panel to maintain reliable protection over time.

How it compares and why it matters

Compared to lower- or higher-current versions, the 70 A, 3-pole configuration offered by the HDA36070UR is tailored for circuits where three-phase loads require robust protection without unnecessary tripping in normal operation. Its 600 V rating expands its applicability beyond low-voltage residential setups, accommodating more demanding commercial and industrial power distribution while preserving safety and equipment integrity.

Whether you’re upgrading an aging panel, completing a new three-phase installation, or replacing a failed breaker, the Square D HDA36070UR 70A 3-Pole 600 V Circuit Breaker provides a reliable, purpose-built solution that supports smooth operation and long-term electrical safety.