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Square D BJA260502 Molded Case Circuit Breaker
- 50A
- 2 Pole
- I-Line
Square D
BJA260502
Molded Case Circuit Breaker
Brand
Square D
SKU
BJA260502
Quantity
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Square D BJA260502 - 50A 2 Pole Molded Case Circuit Breaker
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Description
The Square D BJA260502 is a 2-pole, 50A molded case circuit breaker from the PowerPacT B-Frame family. It provides reliable overcurrent protection for commercial applications. Designed for seamless integration, it installs into Square D I-Line panelboards and switchboards. Featuring an AC phase connection, this unit serves as an exact replacement for legacy FH26050AC breakers. Rated at 65 kAIC at 480VAC, it delivers robust current-limiting performance and includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | BJA260502 |
| Series | BJA |
| Amperage | 50A |
| 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 AWG - 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, Undervoltage Release, Auxiliary Switch, Alarm Switch, Padlock Attachment, Lug Kits |
|---|---|
| Accessories | None included |
| 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 |
Product FAQs
7 answersWhat panelboards are compatible with the BJA260502 circuit breaker?
This breaker is designed for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection that mounts directly to the interior bus assembly.
Can the BJA260502 replace older Square D F-Frame breakers?
Yes, the PowerPacT B-Frame is the designated replacement for legacy Square D F-Frame circuit breakers, including the FA and FH series. It fits into the same I-Line mounting space, making it a direct drop-in replacement for older 50A, 2-pole models like the FH26050.
What does the J in the BJA260502 catalog number indicate?
The J designates the interrupting rating tier for this PowerPacT B-Frame breaker. It indicates a high interrupting capacity, specifically 65kA at 480VAC and 100kA at 240VAC.
How does the I-Line connection on the BJA260502 work?
The I-Line plug-in design allows the breaker to be pressed directly onto the panelboard busbar. It is then fully seated using a screwdriver and secured with a retaining screw, eliminating the need for line-side wire connections.
What wire sizes are accepted by the load-side lugs on this breaker?
The mechanical lugs on the BJA260502 accept aluminum or copper wire ranging from 14 AWG to 2/0 AWG.
Is the Square D BJA260502 rated for DC applications?
Yes, this thermal-magnetic breaker is rated for DC systems up to 250VDC, providing a DC interrupting rating of 50kA.
What type of trip unit is installed in the BJA260502?
It features a fixed thermal-magnetic trip unit with Long-Time and Instantaneous (LI) protection functions. Both the thermal overload and magnetic short-circuit trip points are fixed and non-adjustable.
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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.