Square D JJL36250 - 250 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Square D JJL36250 is a 250A, 600V, 3-pole molded case circuit breaker engineered to protect panelboards and loadcenters from overcurrent and short-circuit events. Its compact form fits tighter panel layouts, while its thermal-magnetic trip unit delivers dependable, repeatable protection across a wide range of load conditions.

Why this breaker stands out

• Space-efficient design: A compact molded-case profile helps you maximize panel space without sacrificing protection.
• Thermal-magnetic trip unit: Combines thermal overload protection with magnetic short-circuit protection for fast, predictable trips and fewer nuisance interruptions.
• Three-pole configuration: Specifically suited for 3-phase systems, making it ideal for commercial and light industrial applications and for motor-driven equipment.
• High-current, high-voltage capability: 250A rating paired with a 600V rating covers large feeders and industrial loads while maintaining safe, reliable interrupting capacity.
• OEM-compatible: Designed to pair seamlessly with matching Square D loadcenters and panelboards for a uniform protection profile and easy replacements.
• Versatile application range: Suitable for residential, commercial, and light industrial installations that demand robust branch-circuit protection.

Ideal use scenarios

• Feeding large branch circuits in panelboards where space is at a premium, such as multi-story residential buildings or small to medium commercial spaces.
• Protecting three-phase equipment and motors in light industrial environments where reliable short-circuit interruption is critical.
• Replacing aging or incompatible breakers in OEM panelboards with a trusted, compatible Square D solution to maintain consistent protection characteristics.

What you gain with the JJL36250

Beyond basic specs, this breaker provides a clear protection advantage: a stable trip response that aligns with your equipment’s protection needs, reducing the risk of unexpected outages and electrical damage. Because it’s built to integrate with the same family of Square D loadcenters and panelboards, you benefit from predictable trip curves and straightforward installation.

Technical specifications at a glance

• Manufacturer: Square D
• Part number: JJL36250
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 250A
• Voltage rating: 600V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Practical installation and care tips

For optimal performance, ensure compatibility with your OEM panelboard, follow the installer’s guidelines for secure mounting, and verify correct trip settings for the protected circuit. When replacing an existing breaker, inspect panelboard labeling to confirm compatible trip characteristics and confirm that the enclosure and bus connections are clean and free of corrosion.