Square D JJA36250U44X - 250 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D JJA36250U44X—a robust 250 A, 600 V, 3-pole plug-in molded case circuit breaker designed to guard panelboards and load centers from overcurrent and short-circuit events. Built for dependable protection and straightforward maintenance, this unit is a trusted choice for demanding electrical setups across residential, commercial, and light industrial environments.

• Fast plug-in connection for quick installation and painless replacements, minimizing downtime during routine maintenance or panel upgrades.
• 250 A at 600 V supports high-demand three-phase circuits while keeping protection precise and reliable.
• 3-pole design delivers coordinated three-phase protection for balanced loads and safer system operation.
• Thermal-magnetic trip unit provides stable, repeatable protection across varying load conditions with an instantaneous magnetic response for high fault currents.
• OEM-compatible engineered to drop into matching Square D load centers and panelboards, ensuring proper fit, bus alignment, and trip coordination.
• Versatile applications ideal for branch circuit overcurrent and short-circuit protection in a range of commercial and light industrial installations.

How it works: The thermal element responds to sustained overloads, while the magnetic element activates during severe faults, rapidly interrupting current to protect conductors and connected equipment. The plug-in mounting maintains a secure connection to the bus, enabling reliable protection with minimal maintenance downtime.

Technical specifications

• Manufacturer: Square D
• Part Number: JJA36250U44X
• 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 for electrical pros stocking Square D components for service upgrades, panel refurbishments, or new installations that require a dependable 3-pole, 250 A plug-in breaker. With the JJA36250U44X, you get precise protection, quick installation, and seamless compatibility with your existing Square D infrastructure.