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Square D BDA261252 Molded Case Circuit Breaker
- 125A
- 2 Pole
- I-Line
Square D
BDA261252
Molded Case Circuit Breaker
Brand
Square D
SKU
BDA261252
Quantity
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Square D BDA261252 - 125A 2 Pole Molded Case Circuit Breaker
New
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Description
Delivering reliable overcurrent protection, the Square D BDA261252 is a 2-pole, 125A molded case circuit breaker. Its BDA designation signifies a PowerPacT B-Frame, D-interrupt capacity (18 kAIC at 480V), and I-Line connection. It features fixed thermal-magnetic trip settings for LI functions. This component installs into Square D I-Line panelboards and switchboards with an AC phase connection. It is an exact replacement for older FA26125 breakers, offering current-limiting capabilities.Specifications
| Brand | Square D |
|---|---|
| Series | BDA |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 208Y/120VAC, 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 14kA @ 600Y/347VAC, 10kA @ 250VDC |
| Frame Type | B |
|---|---|
| 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 |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch, Padlock Attachment, Rotary Handle |
|---|---|
| Accessories | Factory-configured for AC-Phase connection |
| 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, 80% Rated, Reverse Feed, Trip-Free Mechanism, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Product FAQs
7 answersWhat legacy Square D circuit breakers does the BDA261252 replace?
The PowerPacT B-frame I-Line breakers are designed to replace legacy FA and FH series molded case circuit breakers in Square D I-Line panelboards, offering upgraded features while maintaining compatible mounting dimensions for easy retrofits.
What does the BDA prefix signify in this Square D part number?
In the PowerPacT nomenclature, B designates the compact 125A maximum B-frame, D indicates the specific interrupting rating tier (18kA at 480VAC), and A specifies the I-Line plug-in mounting style on the line side.
What are the tightening torque specifications for the load-side lugs on the BDA261252?
For 14 to 10 AWG wire, torque the lugs to 31.9 to 38.9 lb-in (3.6 to 4.4 N.m). For 8 to 2/0 AWG wire, torque to 44.3 to 54.9 lb-in (5.0 to 6.2 N.m).
Which bus phases does the BDA261252 connect to in an I-Line panelboard?
The standard BDA261252 catalog number is factory-configured for an AC phase connection on the I-Line bus.
Does the BDA261252 include a mechanism to test the trip function?
Yes, all PowerPacT B-frame circuit breakers feature an integral push-to-trip button on the front cover, allowing you to manually trip the breaker to verify the mechanical operation of the trip mechanism.
How does the BDA261252 handle high short-circuit currents?
This breaker utilizes dual-break rotating contacts. During a severe short circuit, the repelling forces rapidly separate the contacts, which greatly limits the peak let-through current and enhances overall equipment protection.
Is the BDA261252 rated for 100 percent continuous current?
No, standard PowerPacT B-frame thermal-magnetic circuit breakers are rated for 80 percent continuous current per NEC guidelines.
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