Square D HLA36100UDYP 100A 3-Pole 600 V Circuit Breaker

Square D HLA36100UDYP 100A 3-Pole 600 V Circuit Breaker is a rugged protection device engineered for reliability in three‑phase electrical systems. With a 100 A rating per pole and a 600 V maximum, this breaker is purpose-built for commercial and light industrial panels where consistent, phase-balanced protection matters.

Key features that matter in real-world setups

• Three-pole design safeguards all three phases in a 3‑phase distribution system, promoting balanced protection and coordinated trips across the circuit.
• 100 A per‑pole rating provides scalable protection for feeder circuits and branch circuits that demand higher current capacity.
• 600 V voltage rating suitable for applications on common commercial and industrial electrical distributions, where higher voltage equipment requires reliable overcurrent protection.
• Part number clarity HLA36100UDYP simplifies sourcing and replacement within Square D ecosystems, ensuring compatibility with compatible panels and accessories.
• Brand confidence backed by Square D’s legacy in electrical protection, designed to perform consistently under demanding operating conditions.

Who is this ideal for?

This circuit breaker is well-suited for professionals outfitting or upgrading commercial electrical rooms, data centers, manufacturing floors, or any installation that relies on stable three‑phase power. It’s a practical choice when you need dependable protection for 3‑pole circuits operating up to 600 V while maintaining a robust 100 A per‑pole capacity.

Why it matters and how it solves common problems

• reduces the risk of uneven loading and potential equipment damage by monitoring all phases simultaneously.
• helps prevent electrical fires and equipment damage caused by overloads and short circuits in critical feeders.
• with a clearly identified part number simplifies replacement, stocking, and panel retrofits, minimizing downtime during service work.
• fits within standard Square D panel ecosystems, aiding straightforward integration with existing bus systems and accessories.

Practical use cases and installation considerations

• Install as the main protective device for three‑phase feeders in commercial electrical rooms where up to 600 V systems are in use.
• Use in retrofit projects to upgrade older panels to a 100 A, 3‑pole, 600 V protection strategy, aligning with modern safety and performance expectations.
• When planning replacements, match the HLA36100UDYP part number to ensure compatibility with existing panel cutouts and mounting dimensions.

For professionals seeking a dependable, purpose-built solution that clearly communicates its purpose and capabilities, the Square D HLA36100UDYP 100A 3-Pole 600 V Circuit Breaker delivers structured protection for three-phase circuits, simplifies sourcing, and supports durable, long‑term electrical reliability.