Schneider Electric / Square DBJA261001
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Square D BJA261252 Molded Case Circuit Breaker
- 125A
- 2 Pole
- I-Line
Square D
BJA261252
Molded Case Circuit Breaker
Brand
Square D
SKU
BJA261252
Quantity
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Square D BJA261252 - 125A 2 Pole Molded Case Circuit Breaker
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Description
Delivering reliable overcurrent protection, the 125A PowerPacT B-Frame MCCB features fixed thermal and magnetic trip settings across two poles. It is ideal for heavy-duty industrial environments. This unit mounts into Square D I-Line panelboards using a phase AC connection. It replaces the legacy KC26125AC breaker, making facility upgrades straightforward. With an interrupting capacity of 65kAIC at 480VAC, it incorporates a Visi-Trip indicator to quickly identify tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | BJA261252 |
| Series | BJA |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 208Y/120VAC, 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 50kA @ 250VDC |
| Frame Type | BJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| Wire Gauge | 14-2/0 AWG (Al/Cu) |
| Max Wire | 2/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Motor Operator |
|---|---|
| Accessories | Phase Connection AC |
| Standards | CSA C22.2 No 5, EN/IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
7 answersCan the BJA261252 replace older Square D circuit breakers?
Yes, PowerPacT B-frame breakers are designed to replace legacy F-Frame models, including the FA and FH series. They maintain the same mounting space dimensions, allowing for straightforward retrofits in existing Square D I-Line panelboards.
How does the I-Line connection work on the BJA261252?
This breaker features a plug-on line side connection that mounts directly to the bus assembly of an I-Line panelboard or switchboard. The load side utilizes mechanical lugs that accommodate 14 to 2/0 AWG aluminum or copper conductors.
What does the J in the BJA261252 catalog number indicate?
In the Square D PowerPacT nomenclature, the J designates the interrupting rating tier. It signifies that the breaker is rated for 65kA at 480VAC and 100kA at 240VAC.
Is this breaker suitable for direct current (DC) systems?
Yes, the BJA261252 is rated for DC applications. It provides an interrupting capacity of 50kA at 250VDC.
What equipment is compatible with the BJA261252?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It is not compatible with standard load centers, QO panels, or equipment from other manufacturers.
Can the trip settings be adjusted in the field?
No, the BJA261252 is equipped with a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous (LI) protection functions are factory calibrated and cannot be modified.
How can I tell if the BJA261252 has tripped?
This PowerPacT B-frame breaker features a Visi-Trip indicator, which provides a clear visual cue when the breaker has tripped, allowing for quick identification of circuit issues in the panel.
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Reviews
Review summary
Customers rate this product 4.3 out of 5 based on 3 reviews.
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Rating
3 reviews
- RHRyan H.Verified BuyerReviewingSchneider Electric BJA36020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/6/25Breaker
It was as described and worked as it should.
- LOLake O.ReviewingSchneider Electric BJA36020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars10/7/21Staff was very helpful.
Staff was very helpful.
- RKRobert K.ReviewingSquare D BJA36040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars1/26/21Breakers
Always fast service. Get my breakers the next day.