Square D HGA36150U43X - 150 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D HGA36150U43X — a 150 A, 3-pole plug-in molded case circuit breaker engineered for reliable overcurrent and short-circuit protection in panelboards and loadcenters. This model brings fast, hassle-free service to residential, commercial, and light industrial installations, helping you keep critical circuits safe with minimal downtime. Available through AmpState, it’s designed to integrate seamlessly with compatible Square D OEM loadcenters for a secure, code-compliant protection solution.

• Fast plug-in connection — simplify installation and replacement with a quick, secure plug-in design that minimizes maintenance time.
• Thermal-magnetic trip unit — delivers stable, repeatable protection against overloads and short circuits, reducing nuisance trips and protecting valuable equipment.
• 3-pole, 150 A configuration — ideal for multi-wire or three-phase circuits where robust, high-capacity protection is required.
• OEM panelboard compatibility — engineered to work with matching Square D OEM loadcenters and panelboards for dependable electrical performance and easy seating.
• Versatile application — suited for residential, commercial, and light industrial environments where dependable branch circuit protection is essential.

Who this is for

• Electrical professionals upgrading or replacing aging breakers in existing panelboards and loadcenters.
• Specifying a reliable 150 A, 3-pole solution for high-demand circuits in commercial spaces or light industrial settings.
• Anyone needing a plug-in molded case breaker that pairs with Square D OEM equipment for consistent performance and fit.

Why it matters

• The thermal-magnetic trip provides precise protection, helping to prevent equipment damage and electrical fires while reducing unnecessary trips during transient faults.
• The plug-in design accelerates service calls and replacements, keeping downtime to a minimum during routine maintenance or fault isolation.
• OEM compatibility ensures you won’t fight with fit or performance — a secure, reliable solution that maintains system integrity across your panelboard lineup.

Technical specifications

• Manufacturer: Square D
• Part Number: HGA36150U43X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 150 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

In short, the Square D HGA36150U43X delivers robust protection, fast serviceability, and OEM-aligned reliability for a wide range of installations. It’s the practical, performance-first choice when you need proven protection for your panelboard system.