Square D JJA36250U31X - 250 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D JJA36250U31X — a rugged, 3-pole plug-in molded case circuit breaker engineered for dependable branch circuit protection in panelboards and load centers. With a 250A rating at 600V, this device is designed to handle the demands of commercial and light industrial electrical systems, while also meeting the needs of specific residential setups that require robust protection.

Why this breaker stands out

• Fast plug-in connection for quick installation and straightforward replacement in compatible panels, reducing downtime during upgrades or service calls.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit interruption—providing reliable response to fault currents.
• OEM-compatible design ensures seamless compatibility with matching Square D load centers and panelboards, simplifying part matching and future upgrades.
• Three-pole configuration ideal for three-phase circuits, offering balanced protection across all phases in commercial or light industrial environments.
• Durable molded-case construction built to withstand field conditions while maintaining consistent protection performance over time.

Technical specifications at a glance

• Manufacturer: Square D
• Part number: JJA36250U31X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 250 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications and use cases

• Panelboards and load centers that accept plug-in molded-case breakers, enabling seamless upgrades and replacements.
• Commercial and light industrial electrical systems requiring reliable 3-phase protection and rapid fault interruption.
• Residential setups where a high-capacity, three-pole protection device is needed in a compatible panel configuration.
• Situations demanding quick maintenance or part swaps, thanks to the fast plug-in connection.

With the Square D JJA36250U31X, you’re choosing a trusted solution for safeguarding electrical circuits against overloads and short circuits. It’s the practical, performance-focused choice for professionals who value compatibility, speed of installation, and consistent protection in demanding panel environments.