Square D HDA36090SL 90A 3-Pole 600 V Circuit Breaker

Square D HDA36090SL is a robust three‑phase circuit breaker designed to protect demanding commercial and industrial electrical systems. With a 90 A rating and a 3‑pole configuration, this unit delivers coordinated protection across all three phases, helping prevent damage from overloads and short circuits in complex power distributions.

• Model: HDA36090SL
• Brand: Square D
• Current rating: 90 A
• Poles: 3
• Voltage rating: 600 V

Why this specific Square D breaker stands out for three‑phase systems:

• Ensures simultaneous disconnection of all phases, reducing the risk of unbalanced faults that can harm motors and equipment.
• High voltage capability: 600 V rating expands compatibility with a wide range of industrial panels and distribution setups.
• Precise current handling: 90 A rating targets typical feeders and motor circuits where reliable protection is essential without unnecessary trips.
• Trusted Square D build: Part of a legacy lineup known for dependable performance in critical electrical infrastructure.

Ideal use cases include protecting 3‑phase feeders and motors in commercial buildings, manufacturing floors, HVAC systems, and data center infrastructure where reliable, coordinated trip protection is essential. It’s the go‑to choice when you need a dedicated, compatible replacement in Square D panels that accept HDA‑series breakers.

Practical deployment notes:

• Verify your panel accepts HDA series breakers and that the HDA36090SL matches the required interrupting and trip characteristics for your installation.
• Before replacement, ensure power is fully shut off and the system is de‑energized, following all safety procedures.
• Use this 90 A, 3‑pole, 600 V breaker in appropriately rated circuits to maintain optimal protection for three‑phase loads and avoid nuisance trips on startup surges.

Whether you're upgrading an aging distribution panel or specifying new equipment for a three‑phase industrial layout, the Square D HDA36090SL delivers reliable, coordinated protection with a precise 90 A capacity and a 600 V rating—crafted for performance when it matters most.