Square D HRA36150U33X - 150 A, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D HRA36150U33X is a 150A, 3-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for quick service and lasting performance, this breaker supports fast plug-in connections that simplify installation and replacement, reducing downtime during panel upgrades or maintenance.

Why this plug-in breaker stands out

• Fast plug-in installation: Streamlined connection to compatible panelboards minimizes service time and disruption.
• Thermal-magnetic trip unit: Provides stable, repeatable protection across varying loads and temperatures, helping prevent nuisance trips and safeguarding connected equipment.
• OEM-compatible design: Precisely engineered to fit matching Square D load centers and panelboards, ensuring secure fit and reliable electrical performance.
• Versatile for multiple environments: Suitable for residential, commercial, and light industrial applications where robust branch circuit protection is required.
• Three-pole configuration: Delivers coordinated protection for 3-phase systems or shared-phase feeders, with a common-trip design that simplifies safety and wiring.

Technical details

• Manufacturer: Square D
• Part Number: HRA36150U33X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 150A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Upgrading or replacing breakers in existing Square D panelboards and load centers where 150A, 3-pole protection is required.
• Protecting feeders and large branch circuits in residential service panels, small commercial spaces, and light industrial installations.
• Situations demanding quick swap-in replacements to minimize downtime during maintenance or panel refurbishments.

With the HRA36150U33X, you get a purpose-built solution that combines rapid installation, reliable thermal-magnetic protection, and OEM-grade compatibility. It’s the smart choice for preserving electrical safety, simplifying panel service, and ensuring your most important circuits stay protected—today and for years to come.