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Square D JJL36250U44X Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Square D
JJL36250U44X
Molded Case Circuit Breaker
Brand
Square D
SKU
JJL36250U44X
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Square D JJL36250U44X - 250A 3 Pole Molded Case Circuit Breaker
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250A 3 Pole Molded Case Circuit Breaker
250A 3 Pole Molded Case Circuit Breaker
Schneider ElectricJJA36250U44X
250A 3 Pole Molded Case Circuit Breaker
Description
Engineered for maximum safety, this 3-pole, 250A PowerPacT J-Frame breaker provides advanced electronic trip capabilities. It is designed to safeguard commercial electrical systems against overloads, short circuits, and ground faults. The unit-mount construction allows for straightforward installation into Square D switchboards using reliable lug connections. At the core of its performance is the Micrologic 6.2 A trip unit, offering adjustable LSIG settings and a 65 kAIC rating at 480VAC.Specifications
| Brand | Square D |
|---|---|
| Part Number | JJL36250U44X |
| 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 | 100-250A |
|---|
| Frame Type | JJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Industrial 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 | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Communication Module |
|---|---|
| Accessories | Micrologic 6.2 A Ammeter Trip Unit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, True RMS Sensing |
Product FAQs
6 answersWhat does the "U44X" in the catalog number mean?
The U44X suffix indicates the breaker is equipped with a Micrologic 6.2A electronic trip unit. This specific trip unit provides LSIG (Long-time, Short-time, Instantaneous, and Ground-fault) protection and features an integrated ammeter for monitoring phase currents.
Can I install the JJL36250U44X in a Square D I-Line panelboard?
No. The "L" in the JJL prefix indicates it is a unit-mount circuit breaker configured with lugs on both ends. If you are installing into a Square D I-Line distribution panelboard, you will need the JJA equivalent (such as JJA36250U44X), which features a plug-on bracket for the line-side bus connection.
Are the trip settings adjustable on this breaker?
Yes. The Micrologic 6.2A electronic trip unit provides fully adjustable settings for Long-time, Short-time, Instantaneous, and Ground-fault (LSIG) parameters. This flexibility allows electricians and panel builders to precisely coordinate the breaker with downstream and upstream devices in the distribution system.
Does this circuit breaker offer ground-fault protection?
Yes. The LSIG trip unit includes built-in equipment ground-fault protection, represented by the "G" in LSIG. This protects electrical equipment from low-level arcing faults to ground, though it is not classified as a GFCI device for direct personnel protection.
Are the terminal lugs factory-installed on this breaker?
Yes. As a feed-thru, unit-mount breaker, it is shipped with AL250JD mechanical lugs factory-installed on both the line and load sides, ready for standard hardwired connections.
What regulatory safety standards does this PowerPacT breaker carry?
The JJL36250U44X is a UL 489 Listed molded case circuit breaker, which is the standard for primary overcurrent protection in North American switchboards and enclosures. It is also CSA certified and NOM approved.
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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.