Square D HDA36100UN 100A 3-Pole 600 V Circuit Breaker Potential Transformer

Meet the Square D HDA36100UN 100A 3-Pole 600V Circuit Breaker — a purpose-built protection device designed for demanding three-phase power distribution. With a 100 amp current rating and a 600 volt maximum, it delivers reliable, coordinated protection for feeders, equipment, and motors in industrial and commercial settings. The 3-pole design ensures that all three phases are monitored and protected together, helping to prevent imbalanced loads and cascading faults.

Key specifications at a glance

• Current rating: 100 A
• Pole configuration: 3-pole
• Voltage rating: 600 V
• Part number: HDA36100UN
• Product type: Circuit breaker with potential transformer capabilities for integrated protection and metering workflows

Why this model stands out

• Three-phase protection in one module: A single unit protects all three phases, simplifying panel layouts and improving reliability in distribution systems.
• Voltage headroom for industrial environments: Rated up to 600 V, making it suitable for a wide range of commercial and industrial electrical installations.
• Designed for integration with sensing and metering: The potential transformer capability supports compatibility with protective relays and monitoring systems, enabling smarter fault detection and easier system diagnostics.
• Trusted reliability from Square D: Built to meet the demands of modern electrical distributions, offering consistent performance in critical applications.

Ideal use cases

• Protection for three-phase feeders in industrial facilities, data centers, and manufacturing lines
• Motor control circuits where balanced three-phase protection is essential
• Panel boards and distribution enclosures requiring robust overcurrent protection with metering integration

Practical tips for installation and use

• Verify compatibility with your Square D panels and enclosures before installation to ensure proper fit and rating alignment.
• Use the potential transformer capabilities to feed protective relays and monitoring equipment, enabling proactive fault detection and improved maintenance planning.
• Document the exact part number (HDA36100UN) in your asset registry to streamline future replacement sourcing and warranty considerations.

Whether you're upgrading an old distribution panel, expanding a manufacturing line, or setting up a new three-phase feeder, the Square D HDA36100UN 100A 3-Pole 600V Circuit Breaker delivers precise protection, scalable monitoring support, and the reliability you expect from a trusted electrical protection brand.