Square D HDA260404AA 260404A 2-Pole 600 V Circuit Breaker

Meet the Square D HDA260404AA 2-Pole 600 V Circuit Breaker — a resilient protective device designed to safeguard 600-volt electrical circuits with dependable trip performance. Identified by the part number HDA260404AA and model line 260404A, this unit provides two poles for simultaneous disconnection of both conductors, delivering reliable protection in demanding industrial and commercial panel environments.

Key specifications

• Poles: 2
• Voltage rating: 600 V
• Current rating: 260404 A
• Part number: HDA260404AA
• Brand: Square D (Schneider Electric)

What makes this model stand out

Designed as a robust, reliable protection component within Square D’s trusted lineup, the HDA260404AA 2-Pole 600 V circuit breaker offers precise overcurrent protection for circuits running at voltages up to 600 V. The 2-pole design ensures both live conductors are interrupted together during fault conditions, minimizing arc risk and helping protect downstream equipment, wiring, and enclosures. Built to integrate seamlessly with Square D panels and compatible distribution systems, this breaker favors straightforward interchangeability for maintenance and replacements.

Ideal applications

• Industrial control panels and machine rooms requiring 2-pole, 600 V protection
• Commercial electrical distribution where simultaneous disconnection of two hot lines is essential
• Panel replacement or retrofit projects needing a dependable, long‑term Square D solution

Why choose this for your project

• Single-part simplicity: The HDA260404AA provides a clear, cataloged option for ordering and inventory management, reducing delay in project timelines.
• Proven reliability: As part of the Square D family, it aligns with established performance expectations for overcurrent protection and system safety.
• Clear compatibility: Designed to work within Square D/Schneider Electric ecosystems, supporting consistent operation across panels and accessories.

Practical guidance for installation and use

When integrating this breaker, verify that the panel and wiring configurations match the device’s 2‑pole, 600‑volt specification. Adhere to local electrical codes and manufacturer guidelines to ensure proper mounting, labeling, and trip setting behavior. For ongoing performance and safety, keep spare units on hand for maintenance planning and rapid replacements in critical infrastructure environments.