Square D HJA36150U31XAABCSDYP 150A 3-Pole 600 V Circuit Breaker Potential Transformer

Discover reliable protection for demanding three‑phase power with the Square D HJA36150U31XAABCSDYP. This 150 A, 3‑pole circuit breaker is built to safely interrupt and isolate faults in commercial and industrial electrical systems, delivering dependable performance in environments where uptime matters. With a 600 V maximum rating and a precise part number for exact replacement, this unit is designed to slot into compatible Square D panels and setups with confidence.

• Current rating: 150 A
• Poles: 3 (three‑phase protection)
• Voltage rating: 600 V
• Part number: HJA36150U31XAABCSDYP
• Application: Three‑phase circuit protection for industrial and commercial power distribution
• Compatibility: Designed to integrate with Square D panels and field replacements for reliable, consistent protection

Why this 3‑pole, 600 V breaker stands out

Three‑pole configuration is essential for balanced three‑phase systems, helping to protect motors, feeders, and other three‑phase loads from overloads and short circuits. The 150 A rating makes it suitable for mid‑to‑large distribution circuits, while the 600 V rating supports a broad range of industrial applications. Built by Square D, it benefits from established performance, availability, and support within electrical distributions networks.

Ideal use cases

• Industrial manufacturing lines with three‑phase machinery and motor loads
• Commercial facilities employing three‑phase feeders and equipment
• Power distribution panels requiring a precise replacement part with proven reliability

Practical considerations and installation tips

Ensure compatibility by matching the part number HJA36150U31XAABCSDYP to your panel type and listing. As with all high‑voltage protection devices, installation should be performed by a qualified electrician following the manufacturer’s guidelines and local electrical codes. Verify proper torque, secure mounting, and correct wiring to maintain optimal protection and safe operation. When replacing an older unit, confirm that the new breaker aligns with your three‑phase configuration and loads.