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Square D JJA36250U31X Molded Case Circuit Breaker
- 250A
- 3 Pole
- I-Line
Square D
JJA36250U31X
Molded Case Circuit Breaker
Brand
Square D
SKU
JJA36250U31X
Quantity
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Square D JJA36250U31X - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D JJA36250U31X - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | JJA36250U31X |
| Series | JJA |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 63-250A |
|---|
| Frame Type | JJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Micrologic 3.2 Trip Unit |
| Standards | CSA C22.2 No 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NEMA, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, Mercury Free, PVC Free |
Quantity
Square D JJA36250U31X - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Series | JJA |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 63-250A |
|---|
| Frame Type | JJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Micrologic 3.2 Trip Unit |
| Standards | CSA C22.2 No 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NEMA, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, Mercury Free, PVC Free |
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Description
Built for versatile commercial applications, this 3-pole, 250A electronic trip MCCB belongs to the Square D PowerPacT J-Frame lineup. It delivers robust overcurrent protection. The breaker utilizes an I-Line plug-on mounting configuration, enabling fast installation into Square D I-Line panelboards and switchboards. This modular approach simplifies system upgrades. Featuring a 100kAIC rating at 240V, it incorporates a Micrologic 3.2 trip unit with adjustable LI settings.Specifications
| Brand | Square D |
|---|---|
| Part Number | JJA36250U31X |
| Series | JJA |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 63-250A |
|---|
| Frame Type | JJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Micrologic 3.2 Trip Unit |
| Standards | CSA C22.2 No 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NEMA, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, Mercury Free, PVC Free |
Product FAQs
4 answersWhat type of panelboard does the JJA36250U31X install into?
This circuit breaker features an I-Line plug-in connection on the line side, designed specifically for compatibility with Square D I-Line panelboards and switchboards.
What type of wire is compatible with the load terminals on this breaker?
The factory-installed mechanical load lugs accept both aluminum and copper conductors, accommodating wire sizes from 3/0 AWG up to 350 kcmil.
What does the U31X suffix indicate on this circuit breaker?
The U31X suffix specifies that the breaker is equipped with a standard Micrologic 3.2 electronic trip unit. This provides adjustable Long-Time and Instantaneous protection profiles for precise system coordination.
Can this breaker replace an older thermal-magnetic J-Frame in an existing panel?
Yes. This electronic trip model shares the standard PowerPacT J-Frame physical dimensions and I-Line plug-in architecture, making it a direct mechanical fit for older thermal-magnetic I-Line J-Frame models. Always verify that the interrupting rating meets your updated application requirements.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 4 reviews.
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Rating
4 reviews
- CPCody P.Verified BuyerReviewingSquare D JJA36175 - 175A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars8/27/26Fast Delivery
Breaker came perfectly packaged and well ahead of estimated date
- BWBrian W.Verified BuyerReviewingSquare D JJA36250 - 250A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/27/26Great
Quick delivery
- JEJoshua E.Verified BuyerReviewingSquare D JJA36175 - 175A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/16/26Great product
The product fit perfect into my main distribution panel.
- JGJohn G.Verified BuyerReviewingSquare D JJA36225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/23/25Top service
Super breakers has always been great with good stock and quick ship