Square D PJA36080 - 800 A, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D PJA36080 is a high-capacity, 3-pole plug-in molded case circuit breaker designed to deliver reliable overcurrent and short-circuit protection for panelboards and load centers. Built for fast, straightforward installation and dependable performance, this 800A unit is ideal for demanding residential, commercial, and light industrial applications.

• Fast, tool-free plug-in installation: The plug-in mounting design allows quick seating into compatible OEM panelboards, reducing downtime during upgrades, replacements, or service calls.
• Thermal-magnetic protection for stable performance: The integrated thermal-magnetic trip unit reacts predictably to overloads and short circuits, delivering repeatable protection across varying temperatures and load conditions.
• High-current capability in a compact form: With an 800A rating and three poles, this breaker is well-suited to protect large feeders and main circuits in commercial environments and sizeable residential installations.
• OEM-compatible reliability: Designed to match the characteristics of corresponding load centers and panelboards, ensuring coordinated protection and consistent performance.
• Versatile across sectors: Specifically suitable for residential, commercial, and light industrial panel assemblies where robust branch-circuit protection is required.

Technical snapshot

• Manufacturer: Square D
• Part number: PJA36080
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 800A
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical scenarios

• Upgrading service panels in commercial spaces where high-current distribution is required, ensuring protection for large feeders and equipment bays.
• Retrofits in existing OEM panelboards where a reliable, fast-replaceable protection device is essential to minimize downtime.
• New installations in light industrial settings that demand robust, repeatable trip performance for diverse loads and temperature conditions.
• Maintenance scenarios in multi-residence or mixed-use buildings where standardized protection across panels simplifies service and safety compliance.

Why choose this model

• Eliminates lengthy replacement steps with its plug-in design, making maintenance quicker and less disruptive.
• Thermal-magnetic protection provides dependable response to both overloads and short circuits, reducing the risk of equipment damage.
• Designed for seamless compatibility with matched Square D OEM load centers and panelboards, helping maintain consistent protection coordination across the system.

Who is this ideal for?

• Electrical contractors and site electricians performing panel upgrades or new installations in commercial or light industrial environments.
• Facilities managers and maintenance teams responsible for reliable power distribution in mid to large facilities.
• Engineers specifying high-current protection solutions for panelboards where quick replacement and predictable trip behavior are required.

With the Square D PJA36080, you get a purpose-built, high-current plug-in breaker that combines rapid installation, dependable thermal-magnetic protection, and OEM-ready compatibility—delivering peace of mind for heavy-duty distribution while simplifying panel maintenance and upgrades.