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Square D BGA34125Y Molded Case Circuit Breaker
- 125A
- 3 Pole
- I-Line
Square D
BGA34125Y
Molded Case Circuit Breaker
Brand
Square D
SKU
BGA34125Y
Quantity
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Square D BGA34125Y - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D BGA34125Y - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | BGA34125Y-R |
| Series | BGA |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 208Y/120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 20kA @ 250VDC |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Terminal Shields |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No 5, EN/IEC 60947-2, EN/IEC 60947-5-1, GB 14048.2, NEMA AB 1, NMX J-266, UL 489 |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Sold out
Quantity
Square D BGA34125Y - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | BGA34125Y-R |
| Series | BGA |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 208Y/120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 20kA @ 250VDC |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Terminal Shields |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No 5, EN/IEC 60947-2, EN/IEC 60947-5-1, GB 14048.2, NEMA AB 1, NMX J-266, UL 489 |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
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Description
Engineered for industrial power distribution, the Square D BGA34125Y is a 3-pole, 125A molded case circuit breaker. It is part of the PowerPacT B-Frame series, offering compact thermal-magnetic protection. This breaker mounts into standard Square D I-Line panelboards and switchboards. It is an ideal modern substitute for the discontinued FA34125, maintaining the same 1.5-inch per pole width. With a 35kAIC rating at 480Y/277V, this HACR-rated breaker features a push-to-trip mechanism.Specifications
| Brand | Square D |
|---|---|
| Part Number | BGA34125Y-R |
| Series | BGA |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 208Y/120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 20kA @ 250VDC |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Terminal Shields |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No 5, EN/IEC 60947-2, EN/IEC 60947-5-1, GB 14048.2, NEMA AB 1, NMX J-266, UL 489 |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersWhat panels are compatible with the BGA34125Y and how does it mount?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It mounts using the standard I-Line system, featuring plug-on jaws that connect directly to the bus assembly and a screw-on retaining bracket for secure installation.
Can the BGA34125Y be used to replace an older FA34125 breaker?
Yes, the PowerPacT B-Frame series is the direct modern replacement for discontinued Square D F-Frame breakers, including the FA34125. It maintains the same 1.5-inch per pole width and mounts onto the same I-Line bus.
What does the 'G' in the BGA34125Y catalog number indicate?
The 'G' designates the breaker's interrupting rating tier. In the PowerPacT B-Frame series, a 'G' rating provides 65kA at 240VAC, 35kA at 480VAC, and 20kA at 250VDC.
Does the BGA34125Y come with factory-installed lugs?
Yes, it includes standard mechanical lugs on the load side that accept 14 AWG to 2/0 AWG aluminum or copper wire. The line side connects directly to the I-Line bus.
How does the thermal-magnetic trip unit operate on the BGA34125Y?
The breaker uses a fixed thermal-magnetic trip unit providing Long-Time (L) protection for overloads and Instantaneous (I) protection for short circuits. These settings are factory-calibrated and non-adjustable.
Is the BGA34125Y suitable for DC voltage applications?
Yes, this breaker is rated for DC applications up to 250VDC, providing a maximum interrupting capacity of 20kA.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 7 reviews.
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Rating
7 reviews
- BBrentVerified BuyerReviewingSquare D BGA36050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26Breakers
Breakers looked great.
- BBrentVerified BuyerReviewingSquare D BGA36030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26Breakers
Breakers that were ordered were exactly as expected.
- PHPaul H.Verified BuyerReviewingSquare D BGA36060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/23/26Worked Perfectly.
Prompt shipping. We received the breaker on-time for a scheduled outage of the switchgear feeding an entire building. Thank you!
- JBJosh B.Verified BuyerReviewingSquare D BGA36070 - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars11/11/25Great transaction.
Product arrived in 3 days and as advertised.
- JMJohn M.ReviewingSquare D BGA36080 - 80A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/15/24Good purchase
Material arrived in good condition. Glad to have a source to get this quickly.