Square D JJA36250U33X - 250 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

When reliability and fast service matter in electrical distribution, the Square D JJA36250U33X delivers robust protection for panelboards and load centers. This 250 A, 600 V, 3-pole plug-in molded case circuit breaker is designed to protect heavy-duty branch circuits while enabling quick installation and maintenance in a variety of environments.

• Fast plug-in connection enables quick installation and straightforward replacement, minimizing downtime during maintenance or panel upgrades.
• Thermal-magnetic trip unit provides stable, repeatable protection: the thermal element handles normal overloads, while the magnetic element responds instantly to short circuits for immediate isolation of faulted circuits.
• 3-pole design for 3-phase systems supports balanced protection for motor loads and other 3-phase equipment with a 250 A rating and a 600 V capacity.
• OEM-compatible performance is engineered to work with matching Square D load centers and panelboards, ensuring a reliable fit, labeling, and warranty integrity.
• Versatile applications suitable for residential, commercial, and light industrial environments where robust branch-circuit protection is essential.

Why this breaker matters in your electrical distribution

The JJA36250U33X combines rugged molded-case construction with a plug-in profile, delivering fast, secure mounting and predictable tripping behavior across varying temperatures and loads. It protects large feeders and subcircuits from overcurrent and short circuits, helping to prevent equipment damage, downtime, and fire risk in critical spaces such as power rooms, office complexes, schools, and manufacturing areas.

Technical snapshot

• Brand: Square D
• Part Number: JJA36250U33X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage: 250 A
• Voltage: 600 V
• Poles: 3
• Mounting: Plug-in
• Applications: Branch circuit overcurrent and short-circuit protection