Square D HGA36090SK 90A 3-Pole 600 V Circuit Breaker

Meet the Square D HGA36090SK, a rugged 90 A circuit breaker designed to protect three‑phase power systems up to 600 V. This 3‑pole device delivers reliable overcurrent protection for demanding commercial and industrial loads, helping to prevent damage to wiring, motors, and downstream equipment.

Key capabilities that matter in real-world setups:

• Three-pole protection for balanced safeguarding of three‑phase circuits, making it an ideal choice for motors, compressors, conveyors, and other industrial equipment.
• 90 A current rating provides decisive protection without nuisance tripping for typical three‑phase distributions in medium-load environments.
• 600 V maximum rating supports a wide range of commercial and industrial installations, giving you flexibility across multiple applications.
• Direct replacement potential with part number HGA36090SK ensures compatibility within Square D panels and accessories, streamlining installation and maintenance.
• Designed and tested for dependable performance from a trusted brand in electrical safety and distribution equipment.

Where and how to use

• Three‑phase distribution panels in manufacturing facilities, processing plants, and large commercial buildings.
• Motor control centers and equipment rooms where reliable overload and short‑circuit protection are critical to uptime.
• HVAC systems and other 600 V or lower three‑phase circuits that require robust protection.

Why this matters for your electrical system

• Choosing the Square D HGA36090SK helps ensure consistent trip characteristics and mechanical fit within your existing panel lineup, reducing compatibility surprises during maintenance or upgrades.
• A dedicated replacement part simplifies stocking and maintenance planning, helping minimize downtime when service is needed.

Practical tips for optimal use

• Confirm panel compatibility with the HGA series and follow your local electrical codes during installation.
• Keep a spare HGA36090SK on hand as part of your critical spare kit to shorten repair times on essential circuits.
• Ensure secure connections by applying proper torque to terminals to maintain reliable operation.