Square D HJA260404AABCSD 260404A 2-Pole 600 V Circuit Breaker

Meet the Square D HJA260404AABCSD 2-Pole 600 V Circuit Breaker, a purpose-built protection device engineered to safeguard heavy-duty electrical circuits in commercial and industrial environments. With the model variant 260404A, this breaker is ready to slot into Square D panels that rely on robust, consistent overcurrent protection for high-voltage applications.

What makes this breaker stand out is its 2-pole design paired with a 600 V maximum rating, ideal for controlling and protecting dual-hot-leg circuits common in 240/480 V systems. The two-pole configuration ensures coordinated trips and helps prevent partial power losses that can affect equipment uptime. The part number HJA260404AABCSD is your clear replacement reference for seamless substitution in compatible Square D installations.

• Part number: HJA260404AABCSD
• Model variant: 260404A
• Poles: 2
• Voltage rating: 600 V
• Current rating: 260404 A
• Applications: protects feeders, motor circuits, and distribution panels in industrial and commercial settings

Designed for reliable performance within Square D ecosystems, this circuit breaker helps reduce downtime by providing predictable tripping behavior during overcurrent events. When you need a dependable, easy-to-replace component for high-voltage protection, this 2-pole breaker offers a straightforward path to maintaining safe, compliant electrical systems.

Ideal for facilities that rely on reliable protection for dual-leg 240/480 V circuits, including manufacturing lines, HVAC systems, and critical distribution panels. It’s a practical choice for service upgrades, panel replacements, and OEM control-panel builds where Square D compatibility matters.

Tips for use: verify compatibility with your Square D panel and bus arrangement, replace only with the exact part number for safe operation, and ensure you’re working with a de-energized panel during installation. Keep the 600 V rating in mind for any equipment or circuits connected to the breaker to ensure safe, compliant operation.