Square D HDA36100UK 100A 3-Pole 600 V Circuit Breaker Potential Transformer

Introducing the Square D HDA36100UK 100A 3-Pole 600 V Circuit Breaker Potential Transformer—a purpose-built protective device designed for robust three‑phase power distribution. With a 100 A current rating across three poles and a 600 V maximum, this unit delivers reliable interruption and paired potential transformer capability to support monitoring, protection, and metering in demanding electrical environments.

Key features that matter in real-world setups

• Current rating: 100 A — handles typical industrial loads with dependable fault isolation.
• Poles: 3‑pole configuration for true three‑phase interruption, simplifying panel wiring and improving protection accuracy.
• Voltage rating: 600 V — suitable for a wide range of commercial and industrial distribution circuits.
• Part number: HDA36100UK — a clearly identified component for easy ordering and replacement.
• Potential transformer interface: designed to integrate with sensing and metering systems, enabling accurate fault detection, monitoring, and relay coordination without extra adapters.
• Panel-friendly design: compact footprint that fits standard electrical distribution setups and simplifies retrofits in existing panels.

Who benefits from this model

• Facilities and maintenance teams managing three‑phase motor loads, conveyors, and heavy equipment.
• Panel builders and integrators needing a reliable protective device with measurement compatibility.
• Electrical engineers integrating protection relays, meters, and SCADA elements via potential transformer connections.

What problems does it solve?

By providing coordinated disconnection across all three phases, this circuit breaker minimizes arc exposure, protects conductors and equipment, and supports accurate system monitoring through its potential transformer interface. It simplifies protection schemes and helps ensure faster fault isolation, reducing downtime and potential damage to downstream devices.

Why choose this Square D model over alternatives

• Trustworthy Square D lineage with a clearly identifiable part number (HDA36100UK) for quick sourcing and compatibility checks.
• Three‑pole, 100 A configuration is purpose-built for standard three‑phase distribution, offering straightforward installation in typical industrial panels.
• Integrated potential transformer capability streamlines sensing and metering workflows, reducing the need for additional adapters or components.

Practical tips for use and installation

• Verify that your system operates within the 100 A and 600 V ratings before installation to ensure safe and reliable performance.
• Plan for proper protection coordination by aligning the breaker’s potential transformer interface with your protection relays and metering equipment.
• When retrofitting, check panel space and mounting provisions to accommodate the unit’s footprint and wiring clearance.
• Keep the part number (HDA36100UK) handy for field service, replacements, or future expansions of your three‑phase protection scheme.