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Square D BDA34125Y Circuit Breaker
Square D
BDA34125Y
Circuit Breaker
Brand
Square D
SKU
BDA34125Y
Quantity
Core Specs
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Square D BDA34125Y 3 Pole Circuit Breaker
Re-Certified
Quantity
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Square D BDA34125Y 3 Pole Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Series | PowerPacT B |
| Amperage | 125 A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 208Y/120VAC, 25kA @ 240VAC, 18kA @ 480Y/277VAC, 10kA @ 250VDC |
| Frame Type | BDA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line 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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | RoHS, REACh, HACR |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Phase Connection ABC, Trip-Free Mechanism, RoHS Compliant |
Quantity
Square D BDA34125Y 3 Pole Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Series | PowerPacT B |
| Amperage | 125 A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 208Y/120VAC, 25kA @ 240VAC, 18kA @ 480Y/277VAC, 10kA @ 250VDC |
| Frame Type | BDA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line 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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | RoHS, REACh, HACR |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Phase Connection ABC, Trip-Free Mechanism, RoHS Compliant |
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Description
Square D BDA34125Y 3 Pole Circuit Breaker
The Square D BDA34125Y is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 125 Amps and a voltage rating of 480Y/277VAC. It has an interrupting rating of 25kAIC at 240VAC, 18kAIC at 480VAC, 14kAIC at 600VAC. The BDA34125Y has an I-Line style plug-in connection type and includes long time and instantaneous trip functions.
Specifications
| Brand | Square D |
|---|---|
| Series | PowerPacT B |
| Amperage | 125 A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 208Y/120VAC, 25kA @ 240VAC, 18kA @ 480Y/277VAC, 10kA @ 250VDC |
| Frame Type | BDA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line 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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | RoHS, REACh, HACR |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Phase Connection ABC, Trip-Free Mechanism, RoHS Compliant |
Product FAQs
7 answersWhat panels are compatible with the BDA34125Y circuit breaker?
This breaker is built exclusively for Square D I-Line panelboards and I-Line switchboards. It features a plug-on line connection and mechanical lugs on the load side.
Can the PowerPacT B-Frame replace older F-Frame I-Line breakers?
Yes. The PowerPacT B-Frame is the direct replacement for legacy F-Frame models like the FA and FH series. Because both 3-pole frames require 4.5 inches of I-Line mounting space, retrofitting is straightforward.
How much mounting space does this 3-pole breaker require in an I-Line panel?
The BDA34125Y utilizes 4.5 inches of vertical mounting space on the I-Line bus.
What does the Y suffix in the BDA34125Y catalog number mean?
The Y indicates an ABC phase connection. This means the I-Line jaws plug into the A, B, and C phases on the panelboard bus.
What are the magnetic trip settings for this 125A breaker?
This thermal-magnetic breaker has fixed trip settings. The magnetic short-circuit protection is set to a 1000A hold current and a 1500A trip current.
Can I use this breaker on a standard 480V Delta system?
No. The BDA34125Y has a slash voltage rating of 480Y/277VAC. It is only rated for use on solidly grounded Wye systems where the phase-to-ground voltage does not exceed 277VAC. It cannot be used on ungrounded or corner-grounded 480V Delta systems.
What is the difference between the BDA34125Y and the BGA34125Y?
Both are 125A, 3-pole I-Line breakers, but they have different short-circuit interrupting capacities. The BDA model has a D rating (18kAIC at 480Y/277VAC), while the BGA model features a higher G rating (35kAIC at 480Y/277VAC).
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
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Rating
2 reviews
- NBNick B.Verified BuyerRated 5 out of 5 stars7/21/26Breaker Lock Out
Item arrived in perfect condition and on time.
- SSSteve S.ReviewingSquare D BDL36125 3 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars8/2/22Outstanding Service!!!
Delivered on what they promised!