Square D HLA36020 - 20 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D HLA36020 is a compact, dependable solution for protecting your electrical distribution with precision. At 20 A and 600 V, this 3-pole plug-in molded case circuit breaker is designed to safeguard branch circuits in panelboards and load centers, delivering reliable performance where it matters most.

Why this breaker stands out

• Fast plug-in connection: Install or replace quickly without threading wires or wrestling with hard-to-reach terminals, reducing downtime during maintenance or upgrades.
• Thermal-magnetic trip unit: Combines thermal and magnetic protection for stable, repeatable response to overcurrent and short-circuit conditions, helping to prevent nuisance trips and protecting connected equipment.
• OEM-ready compatibility: Engineered to be compatible with matching Square D OEM load centers and panelboards, ensuring a seamless fit and reliable operation.
• Versatile application range: Suitable for residential, commercial, and light industrial settings where robust circuit protection is essential.

Real-world use cases

In a three-phase commercial panelboard, the HLA36020 provides dedicated protection for critical circuits feeding motors, HVAC controls, or three-phase equipment. In a residential or small commercial upgrade, it offers a dependable solution for branch circuits that require precise protection without compromising panel organization or service accessibility. Its plug-in design makes it ideal for quick swaps during modernization or expansion projects.

Key specifications at a glance

• Manufacturer: Square D
• Part Number: HLA36020
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Who benefits most

Electricians and facilities managers who prioritize quick serviceability and reliable protection will appreciate the HLA36020. It’s an excellent choice for installers working with Square D panelboards and load centers, and for teams upgrading aging gear or expanding electrical capacity in light industrial environments.

Practical tips

• Verify that your panelboard is compatible with the HLA36020 before replacement or installation to ensure optimal fit and protection performance.
• Use the plug-in design to minimize panel downtime during maintenance—plan replacements during scheduled service windows when possible.
• Consider pairing this 3-pole breaker with other matching Square D devices to maintain a consistent protection strategy across your distribution system.

Upgrade your panel with the Square D HLA36020 for precise 20 A, 600 V protection that’s easy to install, dependable in operation, and tailored for panels built to match the Square D lineage.