Square D HDA36080UJ 80A 3-Pole 600 V Circuit Breaker

The Square D HDA36080UJ 80A 3-Pole 600 V Circuit Breaker is a purpose-built safeguard for three-phase electrical systems. Engineered to interrupt and protect circuits up to 80 amperes, this 3-pole device handles demanding loads in commercial and light industrial environments, keeping motors, compressors, and distribution circuits protected from overloads and short circuits in up to 600 V service configurations.

Why this breaker stands out

• Precise three-phase protection with a dedicated 3-pole design that coordinates trip across all phases, helping maintain balanced load distribution and reducing wear on motors and equipment.
• Reliable performance in 600 V systems built to withstand the demands of higher-voltage distribution while delivering dependable interruption when faults occur.
• Part number precision specifically identified as HDA36080UJ, ensuring you’re selecting the exact model for your Square D installation and maintenance records.
• Brand-backed durability from Square D, a trusted name in electrical protection known for consistent trip reliability and long service life in mission-critical applications.

Key specifications

• Current rating: 80 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36080UJ

Ideal use cases

• Three-phase motor circuits in manufacturing, processing, or HVAC systems where reliable overload and fault protection is essential.
• Distribution panels in commercial facilities that require durable, high-voltage protection for up to 600 V service.
• Replacement or upgrade scenarios where a precise 80 A, 3-pole breaker is needed for existing Square D installations.

Practical tips for installation and maximum benefit

• Verify the target application is a three-phase system and that your panel supports a 600 V-class breaker before installation.
• Ensure proper torque on terminals per manufacturer guidelines to maintain reliable connections and consistent trip performance.
• Document the part number (HDA36080UJ) in maintenance logs for future servicing and compatibility checks.