Square D HJL36150U43X - 150 A, 3-Pole Circuit Breaker | AmpState

The Square D HJL36150U43X is a 150 A, 3-pole molded case circuit breaker engineered to safeguard your panelboards and load centers from overcurrent and short-circuit events. Its compact form frees valuable space inside the enclosure, while the thermal-magnetic trip unit delivers stable, repeatable protection across varying temperatures and electrical conditions.

Key features that set this breaker apart

• Compact molded case design maximizes panel space and simplifies wiring in tight installations, helping you fit more circuits without crowding the enclosure.
• Thermal-magnetic trip unit provides precise overload protection coupled with fast, reliable short-circuit interruption for consistent performance in real-world environments.
• Three-pole configuration designed to support three-phase applications, expanding versatility for commercial and light industrial setups.
• OEM panel compatibility engineered to integrate with matching Square D load centers and panelboards, ensuring proper fit and coordinated protection.
• Durable, dependable construction built to withstand daily electrical demand while delivering long service life in demanding settings.

Ideal use cases and applications

• Residential, commercial, and light industrial environments where reliable branch circuit protection is essential.
• Installation or replacement within panelboards and load centers that require a 150 A, 3-pole molded case breaker.
• Three-phase distribution configurations where coordinated protection across phases is critical for equipment safety and uptime.

How this breaker helps you manage risk and performance

This device doesn’t just interrupt current—it ensures you have predictable protection behavior when overloads occur and instantaneous trips during short circuits. The combination of a compact design and a thermal-magnetic trip mechanism translates to fewer space constraints, clearer wiring layouts, and dependable operation when it matters most. By selecting a unit that aligns with the original panel’s specifications, you minimize compatibility concerns and simplify ongoing maintenance.

Why choose Square D HJL36150U43X

• Trusted brand and proven performance in electrical protection for decades.
• Particularly suited for systems that require robust 3-pole protection without sacrificing panel space.
• Designed to work seamlessly with compatible OEM load centers and panelboards, helping maintain proper trip coordination and safety margins.

Upgrade or specify the Square D HJL36150U43X for reliable 150 A, 3-pole protection that keeps panel environments organized, safe, and ready for ongoing electrical demand. If you’re stocking replacement parts for residential or light commercial electrical rooms, this breaker offers a practical balance of compactness, precision protection, and compatibility.