Square D HDA36100SHYP 100A 600 V Circuit Breaker

Square D HDA36100SHYP 100A 600V Circuit Breaker is a purpose-built protection device designed for demanding electrical panels and distribution systems. With a 100-amp current rating and a 600-volt operating limit, this breaker provides reliable overcurrent protection for mid-to-large feeder circuits in industrial and commercial environments. Part number HDA36100SHYP ensures precise identification for easy sourcing and replacement within the Square D ecosystem.

Built for reliability in real-world installations

In the field, you need a breaker that respects the harsh realities of daily use. The Square D HDA36100SHYP is designed to endure frequent operation and provide consistent protection when it matters most—during overloads, short circuits, and unexpected load spikes. Its Square D heritage means it's engineered to integrate smoothly with compatible panels and distribution gear, reducing install time and maintenance hassles.

• 100 A current rating for protecting large feeders and branch circuits in warehouses, factories, and data centers.
• 600 V voltage rating suitable for many commercial and industrial power distributions and motor feeds.
• Part of the HDA family offering familiar form factor and sourcing within Square D’s line.
• Easy sourcing and replacement when servicing Square D panelboards and distribution systems.

Where and how to use it

Ideal for panelboards in manufacturing lines, machine rooms, electrical rooms of large commercial buildings, and distribution panels handling moderate to heavy loads. Use this 100A 600V breaker to protect feeders feeding motors, transformers, or critical circuits where reliable interruption at or before fault currents is essential.

Practical installation tips

Before installation, verify that the HDA36100SHYP rating matches your panel’s requirements and that your system’s short-circuit current rating supports the breaker. Follow all safety procedures, shut off the master breaker, and consult your electrical diagrams to ensure correct pole configuration. If you’re replacing an older Square D breaker, this part number aligns with the same family to minimize retrofit work.