Delivering reliable overcurrent protection, this 2-pole, 70A MCCB is a key component of the Square D PowerPacT B-frame series. It is engineered for heavy-duty commercial and industrial electrical distribution. This specific model features a BC phase connection and an I-Line plug-on design, allowing it to mount into Square D I-Line panelboards and switchboards. It replaces the legacy FA24070BC circuit breaker.
What panelboards accept the BDA24070Y4 circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a plug-on design that mounts directly to the internal bus stack.
Can the BDA24070Y4 replace older Square D F-frame breakers?
Yes, this PowerPacT B-frame breaker is the modern replacement for the legacy FA24070BC circuit breaker.
What does the Y4 suffix mean in the BDA24070Y4 catalog number?
The Y4 suffix indicates that this 2-pole breaker is configured for a BC phase connection on the I-Line bus.
What does the D in the BDA frame designation represent?
The D specifies the interrupting capacity tier for the PowerPacT B-frame series, which provides 18kA at 480Y/277VAC and 25kA at 240VAC.
Does this breaker require separate mounting hardware for installation?
No, the I-Line plug-in connection allows the breaker to snap directly onto the panelboard busbars. The load side utilizes standard mechanical lugs for wire connections.
Are the trip settings adjustable on the BDA24070Y4?
No, this breaker features a thermal magnetic trip unit with fixed long-time and fixed instantaneous trip functions. The trip curve cannot be adjusted in the field.
How can I tell if the BDA24070Y4 has tripped?
This PowerPacT B-frame breaker features a Visi-Trip indicator, which provides a highly visible visual cue to help quickly identify a tripped circuit in the panelboard.
Is the BDA24070Y4 an 80% or 100% rated circuit breaker?
This model is a standard 80% rated circuit breaker. For continuous loads lasting three hours or more, the load should not exceed 56 amps, which is 80% of its 70-amp rating.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 9 reviews.
Square D BDA36100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/2/26
Good price, fast delivery
My local supplier was backordered one this item for a few months, Superbreakers beat the price and delivered it quickly.
AG
Alan G.
Verified Buyer
Reviewing
Square D BDA36020 - 20A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/10/26
Excellent Value
Excellent Value and fast shipping. SuperBreakers delivered!!
MM
Mike M.
Verified Buyer
Reviewing
Square D BDA36050 - 50A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
2/25/26
Review
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
SM
Sergio M.
Verified Buyer
Reviewing
Square D BDA36040 - 40A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
1/19/26
Installed & 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!
GO
George O.
Reviewing
Square D BDA36080 - 80A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
8/18/22
Just received it. Packaging was
Just received it. Packaging was good. Product seems to be exactly as described. Installing soon.