Square D JJL36250U43X - 250 A, 3-Pole Circuit Breaker | AmpState

Introducing the Square D JJL36250U43X, a 250 A, 3-pole molded case circuit breaker designed to protect panelboards and loadcenters from overcurrent and short-circuit events. Sold by AmpState, this device is built for dependable performance in residential, commercial, and light industrial applications, and is ready to integrate with matching OEM Square D loadcenters for a seamless, reliable protection solution.

Why this breaker stands out

• Compact molded case design allocates panel space efficiently, making installation in tight electrical configurations straightforward without compromising protection.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining accurate overload sensing with fast short-circuit response, helping to minimize nuisance trips while safeguarding circuits.
• 3-pole configuration provides comprehensive protection for three-phase systems or multi-wire arrangements, simplifying high-demand commercial and light industrial wiring schemes.
• OEM-compatible built to be compatible with matching Square D loadcenters and panelboards, ensuring proper fit, performance, and listing when used as a replacement or in new installations.
• High-current rating at 250 A, ideal for protecting large feeders and main-distribution circuits in appropriate panel setups.

Who this is for

This breaker is an excellent fit for electricians, facilities maintenance teams, and contractors working on residential service upgrades, commercial panel modernization, or light industrial electrical installs. It’s designed for installations where reliable overcurrent and short-circuit protection are critical, and where OEM compatibility with Square D panelboards matters for code compliance and long-term performance.

Practical use cases and benefits

• Replace aging or failed breakers in Square D panelboards to restore dependable protection without compatibility concerns.
• Use as a high-current feeder or main-disconnect protection in suitable panel configurations that require a robust 3-pole solution.
• Pair with matching loadcenters to maintain system integrity, listing, and coordinated protection across the electrical distribution network.

Installation and compatibility tips

Ensure your installation is in a panelboard or loadcenter that lists or explicitly supports the JJL series from Square D. The JJL36250U43X is designed to work as part of a correctly matched Square D protection scheme, so verify panel compatibility and any manufacturer-specific guidelines before replacement or installation.

Specification at a glance

• Brand: Square D
• Part Number: JJL36250U43X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250 A
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Equip your panel with precise, durable protection—the Square D JJL36250U43X 250 A 3-pole molded case circuit breaker is ready to safeguard loads and uphold system reliability. Add it to your cart today for a proven solution that aligns with your Square D panel and installation needs.