Square D JJL36150 Molded Case Circuit Breaker | 150A 3-Pole 600V Feed-Thru

Square D JJL36150 – 150 Amp, 3-Pole, 600V Current-Limiting Molded Case Circuit Breaker (Feed-Thru)

The Square D JJL36150 is a high-performance, current-limiting, thermal magnetic molded case circuit breaker engineered for demanding commercial and industrial power distribution applications. Part of Schneider Electric's trusted Powerpact J-Frame family, this 150-amp breaker delivers superior short-circuit protection with one of the highest interrupting ratings in its class — up to 100kA at 240VAC.

With its feed-through (feed-thru) mounting design, the JJL36150 is ideal for installations requiring both line and load side lug terminals, making it suitable for reverse-fed applications without requiring additional hardware. Whether you're specifying for a new panel build, upgrading aging infrastructure, or replacing a failed unit, this breaker is a direct, drop-in solution.

Key Specifications

• Part Number: JJL36150
• Manufacturer: Schneider Electric / Square D
• Product Family: Powerpact™ J-Frame
• Type: JJL (Current Limiting)
• Amperage: 150A
• Number of Poles: 3-Pole (3P)
• Phase: 3-Phase
• Voltage Rating: 600VAC / 250VDC
• Mounting Type: Feed-Through (Feed-Thru) — Unit Mount
• Trip Type: Thermal Magnetic — Non-Interchangeable
• Trip Functions: LI — Long-Time & Instantaneous
• Terminal Type: Line & Load Side Lug Terminals Included
• Suitable for Reverse Fed Applications: Yes
• Certifications: UL Listed, CSA Certified

Interrupting Ratings (AIC)

• 100kA @ 240VAC
• 65kA @ 480VAC
• 25kA @ 600VAC
• 20kA @ 250VDC

What Makes the JJL36150 Stand Out?

Current-Limiting Technology: The JJL series uses current-limiting action to reduce the let-through energy during a fault, protecting downstream equipment and bus structures more effectively than standard interrupting breakers.

Feed-Thru Design: Unlike plug-in or bolt-on breakers, the feed-through configuration provides both line and load side connections — offering flexibility in complex distribution panel layouts and eliminating the need for additional lug kits.

Reverse-Fed Capable: The JJL36150 is factory-rated for reverse-fed operation, making it suitable for bus tie and main breaker applications without field modification or special ordering.

Powerpact J-Frame Platform: Backed by Schneider Electric's global engineering and manufacturing standards, the Powerpact family is one of the most widely specified and supported MCCB platforms in North America.

Common Applications

• Commercial and industrial distribution panelboards
• Main circuit protection in 480V and 600V systems
• Feeder circuit protection for motors, HVAC, and heavy equipment
• Bus tie and reverse-fed switchboard configurations
• Data centers, manufacturing plants, and utility substations

Frequently Asked Questions

What does "feed-thru" mean on a circuit breaker?
A feed-through (feed-thru) circuit breaker includes both line-side and load-side lug terminals built into the unit, allowing conductors to be landed directly on both ends of the breaker. This eliminates the need for a separate lug kit and supports reverse-fed installation.

Is the JJL36150 suitable for reverse-fed applications?
Yes. The Square D JJL36150 is UL-listed and factory-rated for reverse-fed use, meaning power can be applied to either the line or load terminals without derating or special approval.

What is the difference between JJL, JGL, and JDL breakers?
All three are Square D J-Frame molded case breakers at 150A/600V, but they differ in interrupting capacity. The JDL offers standard interrupting capacity (18kA@480V), the JGL provides high interrupting capacity (35kA@480V), and the JJL is the current-limiting type with the highest rating (65kA@480V / 100kA@240V).

What frame size is the JJL36150?
The JJL36150 is a J-Frame molded case circuit breaker — a mid-range frame size commonly used for 100A to 250A applications in three-phase power distribution systems.

Is this breaker in stock and ready to ship?
Yes. Alpha Brokers & Controls stocks the JJL36150 new-in-box and ready for fast shipment. Contact us for lead time and bulk pricing.

SKU: JJL36150-N  |  Condition: New  |  Sold by Alpha Brokers & Controls