Square D JDA36250U31X - 250 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D JDA36250U31X—a 3-pole, 250A, 600V plug-in molded case circuit breaker built to safeguard your panelboards and load centers. Designed for dependable branch circuit overcurrent and short-circuit protection, this unit is engineered for fast, reliable service in today’s energized environments.

Why this breaker stands out

• Fast plug-in connection enables quick installation and effortless replacement, minimizing downtime during panel maintainence or upgrades.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance, responding accurately to both overloads and short circuits.
• 3-pole configuration is ideal for three-phase systems, supporting robust protection across commercial and light industrial applications.
• OEM-compatible design ensures seamless compatibility with matching Square D load centers and panelboards for consistent protection and fit.
• Versatile application suitable for residential, commercial, and light industrial settings, making it a practical choice for a range of projects.

Key specifications at a glance

• Manufacturer: Square D
• Part Number: JDA36250U31X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

This breaker is purpose-built for panelboard and load center protection in environments where reliability matters—ranging from new commercial builds to panel upgrades in existing facilities. It's well-suited for three-phase services and other applications requiring solid, high-current protection without sacrificing installation efficiency.

How it protects your system—and why it matters

The thermal-magnetic trip mechanism provides dual-layer protection: the thermal element responds to sustained overcurrent (overload) while the magnetic element delivers immediate response to short-circuit events. The result is a protective device that trips predictably, reducing the risk of damage to wiring, devices, and downstream equipment, while helping maintain electrical system uptime.

Installation, compatibility, and best practices

Choose this plug-in molded case breaker when you need a ready-to-install solution that aligns with Square D OEM load centers and panelboards. Its plug-in mounting simplifies service and replacements, making it a practical option for busy electrical spaces where downtime matters. For best results, ensure the unit is used in configurations that match its 600V, 250A, 3-pole design and always follow manufacturer installation guidelines.

Why choose this over generic options

With its Square D lineage and direct compatibility with matching OEM panel components, this breaker minimizes compatibility concerns and ensures consistent electrical performance. The plug-in design and reliable thermal-magnetic protection make it a professional-grade choice for contractors, facility managers, and electrical engineers focused on long-term system integrity and efficient maintenance.

Whether you’re protecting a new installation or upgrading existing infrastructure, the Square D JDA36250U31X delivers dependable, industry-standard protection for demanding electrical environments.