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Square D JJL36250U33X Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Square D
JJL36250U33X
Molded Case Circuit Breaker
Brand
Square D
SKU
JJL36250U33X
Quantity
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Square D JJL36250U33X - 250A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for robust power distribution, the Square D JJL36250U33X is a 250A, 3-pole molded case circuit breaker from the PowerPacT J-Frame family. It delivers advanced overcurrent protection for commercial and industrial facilities. This unit-mount breaker is equipped with line and load side lugs, accommodating 3/0 AWG to 350 kcmil wiring. It installs into Square D J-Frame enclosures and switchboards. The integrated Micrologic 3.2S trip unit offers highly configurable LSI sensing.Specifications
| Brand | Square D |
|---|---|
| Part Number | JJL36250U33X |
| Series | JJL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 70-250A |
|---|
| Frame Type | JJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D J-Frame Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | 3/0 AWG - 350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch, Motor Operator, Rotary Handle, Padlock Attachment, Lug Kits |
|---|---|
| Accessories | Micrologic 3.2S Trip Unit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism, True RMS Sensing, RoHS Compliant |
Product FAQs
7 answersWhat does the U33X suffix indicate on the JJL36250U33X?
The U33X suffix specifies that the breaker is equipped with a Micrologic 3.2S electronic trip unit. This provides field-adjustable Long-Time, Short-Time, and Instantaneous (LSI) overcurrent protection for precise system coordination.
What is the difference between the JJL36250U33X and the JJA36250U33X?
The JJL36250U33X is a unit-mount breaker with lugs on both the line and load sides. The JJA36250U33X is the I-Line plug-in variant designed specifically for Square D I-Line panelboards and switchboards.
Are the lugs on the JJL36250U33X rated for both aluminum and copper wire?
Yes, the factory-installed lugs are dual-rated for both aluminum and copper (Al/Cu) conductors, accepting wire sizes from 3/0 AWG to 350 kcmil.
How is the JJL36250U33X mounted in an electrical system?
It features a feed-thru, unit-mount design. It must be secured with mounting hardware and wired using the provided line and load lugs, rather than plugging directly into a distribution busbar.
What types of enclosures are compatible with the JJL36250U33X?
This unit-mount breaker is designed for installation in standard Square D J-Frame enclosures, switchboards, and motor control centers.
Can field-installable accessories be added to the JJL36250U33X?
Yes, the PowerPacT J-Frame supports various field-installable accessories, including shunt trips, undervoltage releases, and auxiliary switches, which can be mounted internally behind the breaker cover.
Does the PowerPacT J-Frame series offer current-limiting capabilities?
Yes, PowerPacT J-Frame breakers utilize a dual-break rotating contact mechanism that reduces peak current during a short circuit fault, providing current-limiting performance to protect downstream equipment.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
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Rating
2 reviews
- THted h.Verified BuyerReviewingSquare D JJL36200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/29/2536200 breaker
breaker worked good
- LDLeona D.ReviewingSquare D JJL36250 - 250A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/9/21Breaker
Shipped very quickly. Was a "super" price.