Square D HDA260304AABCSK 260304A 3-Pole 600 V Circuit Breaker

Introducing the Square D HDA260304AABCSK 3-Pole 600 V Circuit Breaker—a trusted protection device designed for demanding three‑phase power systems. Built by Square D, this exact replacement part slots into compatible panels and delivers reliable overcurrent protection when workloads rise and electrical demands shift.

• Three-pole configuration for balanced protection across all three phases, helping to prevent phase imbalances that can stress motors and drives.
• 600 V maximum voltage rating, making it suitable for industrial and commercial power distribution that runs at higher voltages.
• Exact part fit: HDA260304AABCSK ensures compatibility with Square D panels and assemblies, reducing installation time and downtime caused by mismatched replacements.
• Rugged design built to withstand the rigors of busy electrical rooms and manufacturing environments.
• Clear identification and straightforward wiring terminals support quick replacement and routine maintenance.

Applications and use cases

• Motor control centers, conveyors, pumps, and other three-phase equipment in manufacturing facilities.
• Commercial HVAC systems and large air handling units that require reliable branch protection.
• Power distribution panels in data centers, warehouses, and retail locations with 3-phase loads.

Why this Square D breaker stands out

• Brand-aligned reliability: Square D is a staple in electrical distribution for a reason—longstanding performance in real-world installations.
• Exact match for your equipment: Using the precise part number HDA260304AABCSK minimizes conversion risk and ensures the protective device behavior matches the original specification.

Specifications at a glance

• Brand: Square D
• Part Number: HDA260304AABCSK
• Poles: 3
• Voltage Rating: 600 V
• Current Rating: 260304 A

Installation and maintenance tips

To ensure optimal performance, verify that the panel and wiring gauge align with the rating and that the device is installed according to the panel manufacturer's guidelines. Regularly inspect for signs of wear or tripping, and replace only with the exact part number to preserve panel protection characteristics.