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Square D BDA34020Y Molded Case Circuit Breaker

  • 20A
  • 3 Pole
  • I-Line
Square D BDA34020Y
Molded Case Circuit Breaker
Brand Square D
SKU BDA34020Y
Select Item Condition
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  • 20A
  • 3 Pole
  • I-Line

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Square D BDA34020Y - 20A 3 Pole Molded Case Circuit Breaker

Square D BDA34020Y - 20A 3 Pole Molded Case Circuit Breaker

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$913.50 In Stock

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Description

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.

Specifications

Key specifications
Brand Square D
Series BDA
Amperage 20A
Poles 3
Mounting Style I-Line
Voltage 208Y/120VAC, 240VAC, 480Y/277VAC, 250VDC
Phase 3
AIC Rating 25kA @ 208Y/120VAC, 25kA @ 240VAC, 18kA @ 480Y/277VAC, 10kA @ 250VDC
Fit and installation
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
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Motor Operator
Accessories None included
Standards 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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Reviews

4.9
Rated 4.9 out of 5 stars
Based on 9 reviews
Rating
Ratings
9 reviews
  • KF
    Kevin F.
    Verified Buyer
    Reviewing
    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.
    Flag of United States
    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.