Square D | HJA36100YP | Circuit Breaker | 100A | 3-Pole | 600V

Square D HJA36100YP circuit breaker delivers reliable, three-phase protection for demanding electrical systems. With a 100A rating, a 3-pole configuration, and a 600V maximum voltage, this unit is engineered for maintenance, retrofit, and replacement projects where exact compatibility matters.

Why this breaker matters

Designed to travel alongside your existing Square D panels, the HJA36100YP provides a precise fit and dependable protection for industrial or commercial power distribution. The 3-pole design ensures coordinated disconnection across all phases, enhancing safety during fault conditions and minimizing downstream equipment damage. By matching the exact part number, you simplify ordering, reduce installation guesswork, and maintain consistent trip characteristics across your protection scheme.

Key specifications

• Amperage: 100A
• Poles: 3-Pole
• Voltage rating: 600V
• Part number: HJA36100YP (best reference for compatibility)

Ideal use cases

• Maintenance replacements in existing Square D installations to restore protective performance
• Retrofit projects where legacy breakers need to be upgraded to current specifications
• Replacement in three-phase feeders and main distribution panels requiring a 100A, 3-pole, 600V device
• New-panel installations or upgrades where downstream protection must align with existing protection strategy

Compatibility and installation notes

Before purchasing, confirm fit and ratings to ensure seamless integration with your panel. The part number HJA36100YP is the best reference for compatibility, so cross-check it against your panel’s documentation. When installing, follow your panel manufacturer’s torque and connection guidelines and ensure conductor sizing aligns with the 100A protection level and 600V system requirements.

What you get

A single Square D HJA36100YP circuit breaker ready to be deployed in suitable 600V, three-phase environments to restore or enhance protection across your electrical distribution setup.