Square D HJA36060U31X - 60 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D HJA36060U31X—a 60A, 600V, 3-pole plug-in molded case circuit breaker engineered to shield your panelboards and load centers from overcurrent and short-circuit events. Built for fast installation, dependable protection, and versatile use, it’s a reliable choice for residential, commercial, and light industrial electrical systems.

• Fast plug-in connection—delivers quick installation and painless replacement in existing panels, minimizing service downtime.
• Thermal-magnetic trip unit—provides stable, repeatable protection by precisely responding to overloads and short circuits, reducing nuisance trips while safeguarding wiring and equipment.
• OEM-compatible design—crafted to fit with matching OEM load centers and panelboards for seamless integration and reliable performance.
• Versatile applications—suitable for a range of settings from home subpanels to light commercial and industrial environments, where 3-phase protection is needed.

The HJA36060U31X is purpose-built for branch circuit overcurrent and short-circuit protection. Its 3-pole configuration is ideal for three-phase systems commonly found in commercial and light industrial installations, while the 60A rating covers mid-range feeders and critical branch circuits. The 600V maximum rating expands its applicability to higher-voltage panel configurations, giving you flexibility across projects.

Technical snapshot

• Manufacturer: Square D
• Part number: HJA36060U31X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 60A
• Voltage rating: 600V
• Poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal for electricians, facilities managers, and maintenance teams upgrading or stocking spare protection devices, this breaker simplifies panel maintenance with its plug-in design and proven thermal-magnetic protection. When you need fast swaps without reconfiguring panel layouts, the HJA36060U31X keeps downtime to a minimum and protects both cables and connected loads from electrical faults.

Practical tips for optimal use:

• Ensure the breaker fits your specific Square D OEM panelboard model and that the rating matches the circuit it protects.
• Use in environments where 3-phase protection is required, aligning with your panel’s configuration and load center design.
• Keep a spare unit on hand to minimize downtime during routine maintenance or fault-driven replacements.