Square D JJL36250U31X - 250 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Square D JJL36250U31X—a 250 A, 600 V, 3-pole molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. This is the robust choice for residential, commercial, and light industrial electrical systems that demand reliable, consistent protection from a trusted OEM.

Why this breaker stands out

• Compact molded case design maximizes panel space without sacrificing protective performance, making it ideal for retrofit installs and tight electrical rooms.
• Thermal-magnetic trip unit delivers stable, repeatable protection across varying loads and temperatures, helping to reduce nuisance trips and maintain system uptime.
• OEM compatibility designed to work with matching Square D load centers and panelboards, ensuring a clean, reliable fit when upgrading or expanding existing installations.
• Three-pole construction provides solid protection for 3-phase circuits, suitable for modern commercial and light industrial PowerDistribution needs.
• High amperage and voltage ratings—250 A at up to 600 V—making it appropriate for feeding large branch circuits and critical equipment in a variety of settings.

Technical snapshot

• Manufacturer: Square D
• Part Number: JJL36250U31X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Upgrading existing panelboards or load centers that require a heavy-duty three-pole protection solution
• Protecting large branch circuits in commercial spaces, offices, or light industrial environments
• Replacing failed or outdated breakers in compatible Square D systems for quick, reliable restoration of service
• Situations where space efficiency and robust protection are both priorities

Practical guidance for installation and reliability

Pair this 3-pole molded case breaker with matching OEM load centers and panelboards for seamless integration. Given its thermal-magnetic trip design, ensure the installation aligns with standard electrical safety practices and local codes. While installation is straightforward for qualified professionals, confirming panel compatibility and exact fit with the original equipment manufacturer (OEM) requirements will help preserve warranty and system performance.

If you’re sourcing high-capacity protection for a 3-phase system and need a proven Square D solution, the JJL36250U31X delivers dependable overcurrent and short-circuit protection with space-efficient design. Available through AmpState, it’s a concrete, real-world choice for reliable electrical protection in a wide range of applications.