Square D HJA260504 - 50 A, 600 V, 2-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D HJA260504—a dependable, plug-in molded case circuit breaker built to safeguard your panels with precise, repeatable protection. Designed for fast service and reliable performance, this 2-pole unit handles demanding branch circuits from residential spaces to light commercial applications.

• 50 A, 600 V, 2-pole plug-in molded case circuit breaker engineered for robust overcurrent and short-circuit protection in panelboards and load centers.
• Fast plug-in connection enables quick installation and effortless replacement, minimizing downtime during maintenance or upgrades.
• Thermal-magnetic trip unit delivers stable, repeatable protection: the thermal element responds to sustained overloads, while the magnetic mechanism trips instantly on severe short circuits.
• OEM-compatible designed to work with matching Square D load centers and panelboards, ensuring a seamless fit and reliable operation.
• Versatile applications ideal for residential, commercial, and light industrial settings where dependable branch circuit protection is essential.

Key specifications at a glance

• Manufacturer: Square D
• Part number: HJA260504
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 50 A
• Voltage rating: 600 V
• Poles: 2
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Why choose this Square D breaker? It’s built for consistent protection in real-world panel environments where reliability and serviceability matter. The plug-in design reduces installation complexity and wear, while the thermal-magnetic trip mechanism provides dependable discrimination between overloads and short circuits—helping prevent nuisance trips and protecting downstream wiring and devices.

Ideal for electricians and facility managers tackling panel upgrades, retrofits, or new installations, the HJA260504 offers a precise combination of performance and convenience. When compatibility with existing Square D panelboards and load centers is essential, this 2-pole 50 A unit delivers the right balance of protection, speed, and ease of maintenance.