Square D HJL36020 - 20 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Square D HJL36020 — a dependable 3-pole molded case circuit breaker engineered for precise protection in panelboards and load centers. With a 20 A rating and a 600 V capacity, this unit is built to safeguard branch circuits against overloads and short circuits while fitting seamlessly into compatible OEM environments.

Why this breaker stands out

• Space-efficient molded case design minimizes panel footprint and helps you maximize space in slim or crowded panels without sacrificing protection.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining overcurrent sensing with fast magnetic response to short circuits, reducing nuisance trips and improving system reliability.
• OEM-compatible construction is designed to work with matching Square D panelboards and load centers, minimizing fit issues and streamlining replacements or upgrades.
• Versatile comfort for various settings suitable for residential, commercial, and light industrial applications where reliable branch-circuit protection is essential.

Ideal use cases

• Upgrading or replacing a defective breaker in existing Square D panelboards and load centers to restore safe, code-compliant protection.
• Protecting multi-circuit distributions in small to mid-size commercial spaces, equipment rooms, and light industrial setups that rely on dependable 3-pole protection.
• Installing a robust protection solution for three-phase distribution where a 20 A rating is appropriate, ensuring consistent trip characteristics across the system.

Compatibility and reliability

This 3-pole breaker is specifically configured to align with Square D OEM loadcenters and panelboards, reducing installation headaches and mismatch risks. The thermal-magnetic mechanism provides dependable performance across varying load conditions, helping to prevent unexpected outages and protecting both wiring and connected equipment.

Technical specifications

• Manufacturer: Square D
• Part number: HJL36020
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 20 A
• Voltage rating: 600 V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Practical tips for use

• Pair this breaker with compatible panelboards to ensure optimal trip curves and consistent protection across all three poles.
• Use as part of a broader protection strategy that includes proper enclosure sealing, conductor sizing, and adherence to local electrical codes for a safe, compliant installation.
• Keep surplus units on hand for quick replacements, reducing downtime in critical panels and service equipment.