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Square D JJA36250U33X Molded Case Circuit Breaker
- 250A
- 3 Pole
- I-Line
Square D
JJA36250U33X
Molded Case Circuit Breaker
Brand
Square D
SKU
JJA36250U33X
Quantity
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Square D JJA36250U33X - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D JJA36250U33X - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | JJA36250U33X |
| 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 | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Terminal Shields |
|---|---|
| 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, NEMA, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, Reverse Feed, Non-Interchangeable Trip, Mercury Free, PVC Free, True RMS Sensing |
Quantity
Square D JJA36250U33X - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | JJA36250U33X |
| 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 | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Terminal Shields |
|---|---|
| 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, NEMA, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, Reverse Feed, Non-Interchangeable Trip, Mercury Free, PVC Free, True RMS Sensing |
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Description
Built around true RMS sensing technology, this 250A PowerPacT J-Frame breaker offers sophisticated long-time, short-time, and instantaneous (LSI) protection. The Micrologic 3.2S trip unit allows facility managers to fine-tune coordination settings. It mounts into Square D I-Line panelboards and serves as an upgrade path for older KHL36250 or KC36250 models. Rated for 65kA at 480VAC, this current-limiting device includes Visi-Trip functionality for rapid fault identification.Specifications
| Brand | Square D |
|---|---|
| Part Number | JJA36250U33X |
| 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 | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Terminal Shields |
|---|---|
| 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, NEMA, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, Reverse Feed, Non-Interchangeable Trip, Mercury Free, PVC Free, True RMS Sensing |
Product FAQs
6 answersCan the JJA36250U33X replace older Square D legacy breakers?
Yes, this PowerPacT J-frame breaker serves as an upgrade path for older legacy K-frame models, including the KHL36250 and KC36250 series. It fits directly into the same Square D I-Line panelboards and switchboards.
Does this breaker require a separate mounting kit for I-Line panelboards?
No additional hardware is required. The I-Line connection utilizes built-in plug-on jaws that attach directly to the bus stack in Square D I-Line panelboards and switchboards.
What specific adjustments does the Micrologic trip unit allow?
The U33X designation indicates it is equipped with a Micrologic 3.2S electronic trip unit. It provides adjustable Long-Time, Short-Time, and Instantaneous (LSI) protection settings, giving electricians the ability to fine-tune overcurrent coordination for specific facility loads.
How does the visual trip indicator function on this breaker?
This unit features a Visi-Trip visual indicator. When a fault causes the breaker to trip, a high-visibility indicator activates, allowing operators to quickly identify the tripped circuit in a crowded electrical panel.
Can I wire the JJA36250U33X for a reverse feed application?
Yes, this breaker supports reverse feed installations. This provides flexibility for panel builders when routing line and load wiring within the switchboard or panelboard.
Is this J-frame circuit breaker current limiting?
Yes, it is designed as a current-limiting circuit breaker. This feature helps reduce peak let-through current during a short circuit, minimizing thermal and magnetic stress on downstream electrical equipment.
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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