Square D HJA36050 - 50 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D HJA36050 is a purpose-built 3-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. With a 50-amp rating and a 600-volt capacity, it handles demanding electrical loads while enabling fast, tool-free replacement when maintenance or upgrades are needed.

• Fast plug-in connection for rapid installation and straightforward replacement, minimizing downtime during panel updates or fault repairs.
• Thermal-magnetic trip unit delivers stable, repeatable protection. The thermal element handles overloads, while the magnetic element provides instantaneous response to short circuits, helping protect downstream equipment and wiring.
• Three-pole design optimized for 3-phase circuits, ensuring consistent protection across all phases and simplifying panelboard configuration in commercial or light industrial environments.
• 50A, 600V rating supports higher-capacity branch circuits typical in small-to-midsize commercial or industrial installations, while remaining suitable for residential applications that require robust protection.
• OEM compatibility designed to work with matching Square D OEM load centers and panelboards, promoting reliable fit, performance, and long-term service life.
• Versatile applications ideal for residential, commercial, and light industrial panels where proven overcurrent and short-circuit protection is essential.

Why choose the HJA36050 for your electrical protection

Choosing a plug-in molded case circuit breaker with a thermal-magnetic trip unit translates to fewer unexpected trips and more predictable, safe operation of circuits that power critical equipment, lighting, and outlets. The 3-pole configuration helps you manage three-phase layouts efficiently, while the plug-in design reduces installation time—an advantage during panelboard retrofits, service upgrades, or new builds.

Technical specifications

• Manufacturer: Square D
• Part number: HJA36050
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 50A
• Voltage rating: 600V
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection