A robust solution for industrial facilities, the Square D BDA34020Y is a 3-pole, 20A PowerPacT B-Frame circuit breaker. It utilizes fixed thermal and magnetic trip units to provide dependable long-time and instantaneous (LI) protection. Featuring an I-Line mounting style, this unit easily integrates into compatible Square D panelboards and switchboards. It also functions as a direct cross-reference for replacing older FA34020 breakers. The HACR-rated device includes a visual trip indicator.
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, Visual Trip Indicator
Product FAQs
7 answers
Which panelboards are compatible with the BDA34020Y circuit breaker?
This circuit breaker features an I-Line style plug-in connection and is exclusively designed for use with Square D I-Line panelboards and switchboards. It will not fit in standard QO, NQ, or NF series panels.
Can the BDA34020Y replace an older legacy Square D circuit breaker?
Yes, the PowerPacT B-frame series is the modernized replacement for legacy Square D F-frame (FA and FH series) circuit breakers. The BDA34020Y can replace an older 20A, 3-pole F-frame breaker in existing I-Line panelboards while maintaining the exact same 1.5-inch per pole mounting space.
Does this breaker require a separate mounting kit for I-Line installation?
No, the BDA34020Y comes with factory-installed I-Line plug-on jaws on the line side. It is ready to plug directly into the bus stack of a Square D I-Line panelboard or switchboard without requiring additional mounting hardware.
Does the BDA34020Y feature adjustable trip settings?
No, this is a thermal-magnetic breaker with fixed thermal and fixed magnetic trip points. It provides reliable long-time and instantaneous (LI) protection but does not support field-adjustable trip dials.
What type of wire is supported by the load-side lugs on this breaker?
The load-side mechanical lugs on the BDA34020Y accept either aluminum or copper (Al/Cu) conductors. The supported wire range for these load-side terminals is 14 AWG to 2/0 AWG.
What does the BDA frame designation indicate compared to other PowerPacT breakers?
The PowerPacT B-frame is the most compact footprint in the Square D PowerPacT industrial breaker family. The letter D in BDA indicates its specific interrupting rating tier, and the letter A designates its I-Line style plug-on termination.
How can I manually test the tripping mechanism of the BDA34020Y?
Like all Square D PowerPacT circuit breakers, this model includes an integral push-to-trip button on the front cover. Pressing this button allows you to manually trip the breaker to verify that the mechanical linkage and internal mechanism are operating correctly prior to panel maintenance.
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Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
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International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
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.