Square D HDA36110UAYP 110A 3-Pole 600 V Circuit Breaker

The Square D HDA36110UAYP is a reliable three-pole circuit breaker engineered for three-phase electrical systems up to 600 V. With a 110 A current rating, it provides targeted overcurrent protection for motor loads, transformers, and distributed power circuits in commercial and industrial environments.

Key specifications

• Current rating: 110 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36110UAYP
• Type: Circuit breaker (Square D)

What makes it stand out

Designed to integrate with Square D panelboards and disconnects, this 3-pole device fits the HDA frame family, delivering coordinated protection across all three phases. It serves as a dependable replacement part for aging or failed units, helping minimize downtime and maintain reliable power distribution in demanding environments.

Ideal applications

• Industrial machinery and three-phase conveyors
• Motor control centers and panelboards in manufacturing facilities
• Distribution panels in commercial settings that require robust 600 V protection

How it works and practical benefits

• Overcurrent protection: quickly disconnects current when a fault or overload occurs, safeguarding wiring and equipment
• Three-pole configuration: ensures balanced, synchronized protection across all three phases
• Durable construction: built to withstand the rigors of industrial use and frequent switching
• Direct compatibility: intended as a drop-in replacement within compatible Square D infrastructure and HDA-style frames

Installation tips and considerations

• Verify compatibility with your existing Square D panels or disconnects to ensure a proper fit in the HDA36110UAYP
• Confirm system voltage is within 600 V and that the 110 A rating matches your protective needs
• Follow manufacturer guidelines for wiring practices and enclosure labeling; ensure proper termination torque as specified by the manual

Why choose Square D

Square D is a trusted name in electrical distribution, delivering reliability and seamless compatibility across panels and protection devices. The HDA36110UAYP embodies that commitment, offering solid, straightforward protection for three-phase systems where uptime and safety matter most.