Square D HJA36020 - 20A, 3-Pole, Circuit Breaker

The Square D HJA36020 is a rugged 20A, 3-Pole circuit breaker built to safeguard 3-phase electrical systems in demanding environments. Designed for use in panelboards, switchboards, and control panels, this device delivers focused, reliable overcurrent protection where uptime matters most.

• 3-Pole configuration: ensures all three hot legs trip together, preventing half-energized circuits and enhancing safety during maintenance or fault conditions.
• 20A current rating: precisely protects feeders and branch circuits in industrial, commercial, and OEM applications without unnecessary trips.
• Versatile installation: suitable for integration into distribution panels and motor control centers, offering flexible use across a variety of 3-phase setups.
• Dependable protection: built to deliver consistent, predictable performance in demanding electrical environments where reliable protection is non-negotiable.

Ideal for electricians, panel builders, OEM integrators, and facility managers who need a certified, ready-to-install 3-pole breaker that aligns with established Square D distribution practices and 3-phase wiring standards.

What problems it solves: by providing coordinated disconnection of all live conductors in a 3-phase circuit, it reduces arc exposure during shutdowns and minimizes downtime caused by nuisance or partial trips. It’s a practical choice for protecting motors, feeders, and critical distribution circuits in both new builds and panel upgrades.

Practical usage tips: match the 20A rating to the protected circuit load, plan for 3-phase feeders in your panel layout, and retain the same type of breaker when replacing to maintain consistent protection characteristics across the system.

With the Square D HJA36020, you’re choosing a trusted solution from a respected line of industrial protection devices—delivering clear, dependable protection for 3-phase distribution and control panels in commercial, industrial, and OEM applications.