Square D HDA36090UR 90A 600 V Circuit Breaker

Meet the Square D HDA36090UR 90A 600 V Circuit Breaker — a genuine OEM component designed to safeguard your electrical distribution with precise, dependable overcurrent protection. Built around the HDA36090UR part number, this breaker is engineered for circuits up to 90 amps and voltages up to 600 volts, delivering reliable performance in demanding environments where safety and uptime matter most.

Key specifications at a glance

• Current rating: 90 A
• Voltage rating: 600 V
• Part number: HDA36090UR
• Brand: Square D

Why this Square D breaker stands out

• Genuine OEM reliability: As an authentic Square D component, it ensures optimal compatibility with Square D panels and acceptance in standard electrical inventories, reducing retrofit risks and maintaining system warranties.
• Accurate protection for higher-voltage circuits: Designed to interrupt fault conditions cleanly on circuits up to 600 V, helping prevent damage to equipment and wiring in commercial and light industrial setups.
• Clear, maintainable specification: With a dedicated 90 A rating, it provides a straightforward replacement option for panel boards that require this exact capacity, minimizing downtime during maintenance or expansion.
• Broad applicability with confidence: Ideal for service panels, distribution enclosures, and equipment feeds in HVAC, manufacturing lines, data centers, and other non-residential applications where reliable protection is essential.

Use cases and ideal applications

• Replacing a worn or tripped breaker in commercial electrical panels that require HDA series devices.
• Protecting branch circuits feeding motors, transformers, or other high-demand equipment in light industrial settings.
• Upgrading or standardizing breakers within a panel to maintain consistency with existing Square D components.
• Situations where matching a 90 A, 600 V protection level is critical for safety, compliance, and reliability.

Practical guidance for installation and compatibility

• Verify that your panel accepts HDA series breakers and that the HDA36090UR is listed in the panel’s compatibility catalog.
• Ensure the circuit’s operating voltage and load profile align with the 600 V/90 A ratings to prevent nuisance trips or under-protection.
• When replacing, use the same ampere rating and voltage rating to preserve panel coordination and fault-branch protection.
• Consult the panel label and manufacturer’s documentation to confirm proper mounting, wiring terminals, and any torque specifications required for secure termination.

Designed for professionals who demand reliability, compatibility, and straightforward maintenance, the Square D HDA36090UR 90A 600 V Circuit Breaker is a purposeful choice for safeguarding essential electrical systems while keeping operations smooth and compliant. If you’re building, upgrading, or servicing a Square D panel, this authentic part delivers the trustworthy performance you rely on in demanding environments.