Square D JJA36250U31X 250A 3P 600V Circuit Breaker | AmpState

Meet the Square D JJA36250U31X—a purpose-built circuit breaker designed to protect panelboards, load centers, and electrical distribution systems with dependable, high-current protection. With a 250 A rating and a 3-pole configuration operating up to 600 V, this device provides synchronized disconnection across all poles to help keep your circuits safe during overloads or faults.

Why this model shines in real-world projects:

• Consistent part number for retrofit and maintenance — ideal for projects where you need to stay with the same part number, reducing downtime and guesswork when refreshing or expanding existing installations.
• Rugged, field-ready construction — built to withstand the demands of panelboards and load centers, with a form factor that fits standard enclosures and bus configurations.
• High-capacity protection — 250 A supports heavy feeders and main circuits, while the 3-pole design ensures reliable, simultaneous trip across all phases.
• Seamless compatibility within Square D systems — especially suitable for networks that rely on Square D protection devices and assemblies, making upgrades and replacements straightforward without extensive panel rewiring.

Specifications at a glance

• Manufacturer: Square D
• Part Number: JJA36250U31X
• Product Type: Circuit Breaker
• Amperage: 250 A
• Poles: 3
• Voltage: 600 V
• Applications: Circuit protection in panelboards, load centers, electrical distribution

Who should consider this breaker?

• Electricians and electrical contractors performing retrofit projects where maintaining the same part number matters for compatibility and downtime reduction.
• Facilities managers planning maintenance or expansions of existing Square D installations.
• Technicians upgrading main feeders in commercial or industrial environments requiring reliable, high-current protection.

Practical tips for use

• Verify your panelboard or load center is designed to accept a 3-pole, 600 V Square D breaker of this type and ensure bus compatibility.
• Coordinate trip characteristics with upstream protective devices to optimize protection and minimize nuisance trips.
• Store and handle breakers in a clean environment to maintain lever operation and prevent corrosion.
• AmpState offers this item and can assist in confirming compatibility if you’re unsure about fit—just reach out for guidance.

Why choose AmpState for this Square D breaker?

• Authentic Square D protection devices with verified specifications, backed by responsive inventory and fast fulfillment.
• Dedicated support to confirm part-number compatibility and help you select the right breaker for your panel and application.
• Transparent warranty and return options to protect project timelines.