Square D HDA36090SN 90A 3-Pole 600 V Circuit Breaker

Introducing the Square D HDA36090SN, a 90A, 3-pole circuit breaker engineered for dependable protection in demanding electrical environments. With a 600 V rating, this device is built to handle the demands of modern 3‑phase systems while safeguarding wiring and downstream equipment from overloads and short circuits. If your panel requires a precise, easy-to-replace protection solution for 3‑phase distribution, the HDA36090SN delivers clear, consistent performance.

• Current rating: 90 A
• Poles: 3 (three-pole design for balanced three-phase protection)
• Voltage rating: 600 V
• Part number: HDA36090SN
• Brand compatibility: Square D, designed for use in compatible Square D distribution panels and enclosures

Ideal use scenarios include protecting feeders and key circuits in commercial or light industrial panels that operate on three-phase power. The 3‑pole configuration ensures simultaneous shutoff across all phases, minimizing the risk of phase imbalance during a fault and helping to prevent equipment damage. The 600 V rating provides the versatility needed for a wide range of commercial and industrial applications, offering a robust solution for higher-voltage circuits while maintaining reliable performance.

Why choose the Square D HDA36090SN over other protection options? It’s purpose-built for environments that rely on dependable, easily replaceable protection within Square D ecosystems. Its 90 A capacity makes it well-suited for medium-load applications, and its three-pole design aligns with standard three-phase installations, reducing complexity during installation and future maintenance.

Practical considerations and tips for use:

• Verify panel compatibility with HDA series devices to ensure a seamless fit and secure mounting.
• Plan for straightforward replacement in the event of a fault or scheduled maintenance, keeping spare units on hand in appropriate storage.
• Use in applications where balanced protection across all three phases is critical to maintain system uptime and protect motors or 3‑phase equipment.