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Square D BDA24020Y4 Molded Case Circuit Breaker
- 20A
- 2 Pole
- I-Line
Square D
BDA24020Y4
Molded Case Circuit Breaker
Brand
Square D
SKU
BDA24020Y4
Quantity
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Square D BDA24020Y4 - 20A 2 Pole Molded Case Circuit Breaker
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20A 2 Pole Molded Case Circuit Breaker
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Description
Designed to replace legacy FA24020BC components, this PowerPacT B-Frame breaker delivers 20 amps of thermal-magnetic protection for commercial facilities. It integrates into Square D I-Line panelboards using a dedicated BC phase connection. Rated for 18kAIC at 480VAC, the unit features a Visi-Trip indicator to simplify troubleshooting and accepts 14 to 2/0 AWG wire, making it a versatile choice for modernizing existing electrical distribution systems.Specifications
| Brand | Square D |
|---|---|
| Part Number | BDA24020Y4 |
| Series | BDA |
| Amperage | 20A |
| 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 | BDA |
|---|---|
| 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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Handle Padlock Attachment |
|---|---|
| Accessories | Phase Connection BC |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, EAC, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
Product FAQs
8 answersCan I use the BDA24020Y4 to replace an older FA or FH series circuit breaker?
Yes. The PowerPacT B-frame series is designed to replace legacy Square D FA and FH series circuit breakers. It maintains the same I-Line mounting space dimensions, making it a direct retrofit for older I-Line panelboards.
What phase connection does the BDA24020Y4 use in an I-Line panelboard?
The Y4 suffix in the catalog number indicates this 2-pole breaker is configured for a BC phase connection on the I-Line bus.
What type of panels will this breaker fit?
This breaker features an I-Line style plug-in connection and is exclusively compatible with Square D I-Line panelboards and switchboards. It will not fit standard load centers or NQ/NF panelboards.
What does the D in the BDA frame type signify?
The D indicates the interrupting rating tier within the PowerPacT B-frame family. For this specific breaker, the D-tier rating provides 25kA at 240VAC and 18kA at 480VAC.
Is this breaker rated for 80% or 100% continuous current?
Like most standard thermal-magnetic circuit breakers, it is rated for 80% continuous current per NEC guidelines.
What wire sizes are accepted by the lugs on this breaker?
The line and load lugs accept aluminum or copper wire ranging from 14 AWG to 2/0 AWG.
Can I mount this breaker on a standard DIN rail?
No. The BDA24020Y4 is specifically configured with an I-Line style plug-in connection for Square D I-Line panelboards. It is not designed for DIN rail or standard unit-mount applications.
Does this breaker include a trip indicator?
Yes. PowerPacT B-frame breakers feature a Visi-Trip indicator that provides a clear visual confirmation when the breaker has tripped, simplifying troubleshooting in the panel.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 9 reviews.
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Rating
9 reviews
- KFKevin F.Verified BuyerReviewingSquare D BDA36100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/2/26Good price, fast delivery
My local supplier was backordered one this item for a few months, Superbreakers beat the price and delivered it quickly.
- AGAlan G.Verified BuyerReviewingSquare D BDA36020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/10/26Excellent Value
Excellent Value and fast shipping. SuperBreakers delivered!!
- MMMike M.Verified BuyerReviewingSquare D BDA36050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/25/26Review
Super Breakers had the breakers I needed in stock at a fair price and shipped & delivered in an expedited fashion. They are my go-to guys for hard to find breakers.
Mike @ Frey Electric
- SMSergio M.Verified BuyerReviewingSquare D BDA36040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/19/26Installed & working
Ordered this from SuperBreakers when local vendors were quoting me 25%+.
So I got a refurbished version of this breaker.
It is installed and working.
Also, service was great.
Thank you SuperBreakers!
- GOGeorge O.ReviewingSquare D BDA36080 - 80A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars8/18/22Just received it. Packaging was
Just received it. Packaging was good. Product seems to be exactly as described. Installing soon.