Square D HDA36125AABCSH 36125A 3-Pole 600 V Circuit Breaker

Experience reliable three-phase protection with the Square D HDA36125AABCSH 3-Pole 600 V Circuit Breaker. Built for demanding industrial and commercial electrical systems, this unit safeguards upstream equipment, wiring, and control circuits by quickly disconnecting fault currents and preventing downstream damage.

Part number HDA36125AABCSH corresponds to a 3-pole design rated for up to 600 V, with a current rating range of 36–125 A. This makes it a versatile choice for a variety of load profiles, from compact manufacturing feeders to larger HVAC and motor-control applications, all within a single, robust protection device.

Key specifications

• Poles: 3 (three-phase protection)
• Voltage rating: 600 V
• Current rating: 36–125 A
• Part number: HDA36125AABCSH
• Brand: Square D

What makes this breaker stand out

As part of the Square D family, the HDA series is designed for dependable trip performance and straightforward integration into compatible panels and enclosures. The 3-pole configuration ensures synchronized interruption across all three phases, which is essential for protecting three-phase motors, pumps, and conveyors from unbalanced faults. With a solid construction and proven protection characteristics, it reduces downtime and helps maintenance teams avoid cascading electrical issues.

Ideal use cases

• Three-phase motors and drive systems in manufacturing or processing facilities
• Power distribution for HVAC equipment and large air-handling units
• Feeders and panel protection in industrial control panels
• Situations where a compact, reliable 3-pole, 600 V solution is needed

Practical considerations

When selecting a replacement or add-on breaker, verify panel compatibility with the HDA36125AABCSH, confirm the circuit voltage remains within the 600 V rating, and ensure the current rating aligns with the protected load. This creates a balanced protection strategy that minimizes nuisance trips while safeguarding equipment and personnel.