Square D HJA36150U31XAABCSHYP 150A 3-Pole 600 V Circuit Breaker

Discover dependable three‑phase protection with the Square D HJA36150U31XAABCSHYP 150A 3‑Pole 600 V Circuit Breaker. Built for demanding electrical environments, this Square D component delivers precise overcurrent protection to keep your motors, transformers, and distribution panels safe from faults and outages.

Key specifications at a glance

• Current rating: 150 A
• Poles: 3 (three‑pole design for 3‑phase systems)
• Voltage rating: up to 600 V
• Part number: HJA36150U31XAABCSHYP
• Brand: Square D

Why this Square D circuit breaker stands out

• Three‑pole reliability: Simultaneous trip on all phases minimizes arc flash risk and protects connected equipment from uneven phase faults.
• Precise compatibility: Designed to fit Square D panels and distribution setups, helping simplify replacement and upgrade projects without compatibility guesswork.
• Robust industrial suitability: Built to endure the rigors of commercial and light industrial applications where stable protection is essential.
• Clear performance designation: With a 150 A rating and 600 V maximum, it’s suited for medium‑to‑large 3‑phase circuits, including motor loads and distribution feeders.

Ideal applications

• 3‑phase motor circuits in manufacturing lines and equipment rooms
• Distributor panels in commercial facilities needing dependable overload protection
• Upgrades or replacements in existing Square D electrical distributions to maintain system protection integrity

Installation, use, and care tips

• Verify that your system’s voltage and current requirements align with the 600 V / 150 A ratings before installation.
• Ensure power is completely shut off and follow proper safety procedures during replacement or maintenance.
• Inspect the breaker for any signs of damage; use the exact part number, HJA36150U31XAABCSHYP, to guarantee correct fit and protection profile.
• For secure wiring, tighten terminations per manufacturer guidelines and confirm bus bar alignment with the panel’s design.

Choose the Square D HJA36150U31XAABCSHYP when you need dependable, exact‑fit protection for 3‑phase circuits up to 150 A and 600 V. It’s a practical, durably built solution that helps reduce downtime, protect valuable equipment, and support safer, more reliable electrical distribution.