Square D HGA36090US 90A 3-Pole 600 V Circuit Breaker

Square D HGA36090US 90A 3-Pole 600 V Circuit Breaker is engineered to deliver reliable, phase-wide protection for demanding electrical systems. Designed for 3-phase circuits up to 600 V, this unit interrupts fault current across all three conductors, helping safeguard wiring, motors, and downstream equipment in commercial and light industrial applications. With a clear focus on performance and dependable protection, it’s a smart choice for panel upgrades, new installations, and retrofit projects.

Key specifications

• Part Number: HGA36090US
• Current rating: 90 A
• Poles: 3
• Voltage rating: 600 V

Why this 3-pole breaker stands out

The 3-pole design ensures simultaneous disconnection of all three phases during a fault, reducing arc risks and providing comprehensive protection for 3-phase feeders and motors. With a 90 A rating, it’s well-suited for medium-sized loads, including conveyors, pumps, compressors, and HVAC equipment. Built to integrate with Square D installations, this breaker is a straightforward replacement option in compatible panels and enclosures that support HGA-style devices, helping you maintain safe, code-compliant electrical systems.

Ideal use cases

• Protect 3-phase motor circuits and feeders up to 90 A in manufacturing floors, warehouses, and processing lines
• Distribute power for HVAC equipment, pumps, and machinery in commercial facilities
• Retrofit or upgrade older electrical panels to meet modern protection standards while preserving existing infrastructure

Practical considerations

When selecting this breaker, verify compatibility with your panel or enclosure that accommodates HGA-series devices. Plan for proper installation by a qualified electrician, and ensure compliance with local electrical codes and safety practices. This model provides robust, phase-wide protection that helps minimize damage from overloads and short circuits, contributing to longer equipment life and reduced maintenance downtime.