Square D HDA36100U44XYP 100A 3-Pole 600 V Circuit Breaker

The Square D HDA36100U44XYP circuit breaker is a robust 100 A, 3-pole protection device designed for demanding 600 V electrical systems. As an authentic Square D part, it delivers reliable overcurrent protection for three-phase circuits in commercial and industrial environments.

Engineered to safeguard motors, transformers, and feeders, this 3-pole breaker provides coordinated interruption across all phases. Built to meet the needs of demanding installations, it offers dependable performance in compatible Square D panels and distribution boards, helping minimize downtime and equipment damage when faults occur.

• Part Number: HDA36100U44XYP
• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V
• Brand/Series: Square D, HDA family

Key benefits

• Authentic OEM replacement that ensures a precise fit and reliable performance in compatible Square D panels
• Three-pole design provides true three-phase protection for balanced interrupting of faults
• Suitable for industrial and commercial 600 V circuits, including motor feeders and distribution panels
• Durable construction built to withstand the rigors of demanding electrical environments

Ideal use cases

• Upgrading or replacing worn breakers in 3-phase 600 V distribution systems
• Protecting three-phase motors, transformers, and feeders in warehouses, manufacturing facilities, and data centers
• Retrofits in compatible Square D panels where a 100 A, 3-pole, 600 V device is specified

Installation and compatibility tips

• Confirm panel labeling and bus compatibility with the HDA36100U44XYP part before replacement
• Power down the system and follow standard lockout/tagout procedures during installation
• Tighten mounting and terminal connections to manufacturer-specified torque values