Square D HDA36100UJYP 100A 3-Pole 600 V Circuit Breaker

Meet the Square D HDA36100UJYP 100A 3-Pole 600 V Circuit Breaker — a robust, industry-trusted solution for safeguarding three-phase electrical systems. Built to handle demanding commercial and light-industrial environments, this breaker delivers reliable overcurrent protection when it matters most.

Key specifications at a glance

• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36100UJYP
• Brand: Square D (Schneider Electric)

What this 3-Pole, 100A breaker protects

The HDA36100UJYP is designed to shield three-phase circuits from overloads and short circuits, helping prevent equipment damage and unplanned downtime. With a 600 V maximum rating, it is suitable for common industrial and commercial distributions where stable, reliable protection is required for motors, MCCs, and three-phase feeders.

Ideal applications and use cases

• Three-phase motor feeders in manufacturing lines or processing equipment
• Feeder breakers for distribution panels in commercial facilities
• Protection for MCCs and multi-mervice power distribution setups
• Repair-friendly replacements in panels that accept HDA-series breakers

Why choose this Square D breaker

• Proven reliability: Part of Square D’s established protection lineup, designed for consistent performance in critical power environments.
• Clear alignment with three-phase systems: The 3-pole configuration provides synchronized protection across all three phases, reducing the risk of unbalanced loads.
• Industry-standard compatibility: Built to slot into compatible Square D panels that support HDA series breakers, helping maintain panel integrity and electrical safety.

Practical guidance and usage tips

Use the Square D HDA36100UJYP when you need dependable circuit protection for 3-phase equipment operating up to 100 A and up to 600 V. Verify that your panel is designed to accept HDA-type breakers and that the overall system voltage and load requirements align with the 600 V rating. For maintenance planning, treat this breaker as part of your core protection strategy for critical loads, checking for proper operation during routine diagnostics and ensuring the trip unit remains within its expected response range.