Square D HDA36100URYP 100A 3-Pole 600 V Circuit Breaker

The Square D HDA36100URYP 100A 3-Pole 600V Circuit Breaker is a robust, ready-to-install solution for protecting three-phase power distributions in demanding commercial and industrial environments. Designed to interrupt fault current quickly and reliably, this 100-amp breaker safeguards wiring, motors, and equipment in busy panels and switchgear applications.

Key specifications at a glance

• Current rating: 100 A
• Poles: 3 (three-pole) for balanced three-phase protection
• Voltage rating: up to 600 V
• Part number: HDA36100URYP

Why the HDA36100URYP stands out

• Three-phase safety for demanding loads: The 3-pole design provides coordinated protection across all phases, essential for motors, conveyors, and other equipment that rely on three-phase power.
• Industrial-grade reliability: Built to perform under the rigors of frequent switching, vibration, and thermal cycling typical in commercial/industrial power distribution.
• 600V capability: Suitable for higher voltage distribution systems, ensuring compatibility with a wide range of industrial installations.
• Designed for Square D panels: Specifically compatible with panels and enclosures that accept HDA-series breakers, enabling straightforward replacement or upgrade in existing installations.

Ideal use cases

• Protecting feeders and distribution circuits for three-phase motors in manufacturing lines, packaging machines, and material handling systems.
• Enabling safe power distribution in HVAC, pumps, and large-scale ventilation systems that run on three-phase power.
• Data centers, warehouses, and facilities with sizable electrical infrastructures requiring reliable overcurrent protection for 3-phase distributions.

Installation and compatibility tips

• Ensure the receiving panelboard or switchgear is rated for three-pole, 100 A protection and accepts HDA-series breakers.
• Before installation, power must be off and all safety protocols followed; verify torque specifications for terminations per the panel manufacturer guidelines.
• Use as a like-for-like replacement for systems currently protected by a compatible Square D HDA breaker to maintain coordinated protection and consistent trip characteristics.

Practical insights for long-term reliability

• Keep a spare HDA36100URYP on hand in environments with frequent maintenance to minimize downtime during fault protection upgrades or replacements.
• Label circuits clearly to reflect the 3-phase protection provided by the 3-pole design, aiding quick diagnosis and safe maintenance.
• Store and handle breakers in a clean, dry environment to preserve terminal integrity and performance over time.