Square D LJA36250U33X - 250 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D LJA36250U33X—a 250A, 3-pole plug-in molded case circuit breaker engineered for reliable overcurrent and short-circuit protection in panelboards and load centers. Built to integrate seamlessly with Square D systems, this breaker delivers dependable performance where it matters most—inside residential, commercial, and light industrial electrical distributions.

• Fast plug-in connection: Designed for quick installation and effortless replacement, helping you minimize downtime during panel servicing or upgrades.
• Thermal-magnetic trip unit: Combines thermal and magnetic protection to provide stable, repeatable response to both sustained overloads and instantaneous faults, protecting feeders and downstream equipment.
• OEM-ready compatibility: Precisely matched to Square D load centers and panelboards, ensuring proper fit, electrical coordination, and reliable performance.
• 3-pole configuration: Suitable for 3-phase circuits common in commercial and light industrial applications, as well as larger single-phase feeders in mixed-load panels.

Why this matters in real-world setups

• Enhanced panel reliability: By delivering predictable trip characteristics, it helps safeguard wiring, motors, and sensitive equipment from damage due to overcurrent events.
• Maintenance-friendly design: The plug-in style simplifies testing, replacement, and panel upgrades, reducing labor time and service disruption.
• Versatile application coverage: Whether you’re wiring a home workshop, a small office building, or light manufacturing, this breaker provides robust protection for critical circuits.

Technical snapshot

• Manufacturer: Square D
• Part number: LJA36250U33X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 250A
• Poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an existing panel or stocking a critical spare for service work, the Square D LJA36250U33X delivers purpose-built protection with a focus on installation ease and long-term reliability. Choose this 3-pole plug-in breaker when you need strong, predictable protection for larger, multi-wire circuits in residential, commercial, or light industrial environments.