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Square D BGA36040 Molded Case Circuit Breaker

  • 40A
  • 3 Pole
  • I-Line
Square D BGA36040
Molded Case Circuit Breaker
Brand Square D
SKU BGA36040
Select Item Condition
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  • 40A
  • 3 Pole
  • I-Line

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Square D BGA36040 - 40A 3 Pole Molded Case Circuit Breaker

Square D BGA36040 - 40A 3 Pole Molded Case Circuit Breaker

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$660.99 In Stock

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Description

Designed for commercial and industrial power distribution, the Square D BGA36040 is a 3-pole, 40A MCCB from the PowerPacT B-Frame family. It provides reliable thermal-magnetic protection with fixed LI trip functions. This unit mounts into Square D I-Line panelboards and switchboards. It serves as a modern replacement for legacy FA36040 breakers, simplifying facility maintenance. Featuring a 35kA rating at 480VAC, it includes ABC phase connections and a Visi-Trip indicator.

Specifications

Key specifications
Brand Square D
Series BGA
Amperage 40A
Poles 3
Mounting Style I-Line
Voltage 208Y/120VAC, 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 250VDC
Phase 3
AIC Rating 65kA @ 208Y/120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 35kA @ 480VAC, 18kA @ 600Y/347VAC, 20kA @ 250VDC
Fit and installation
Frame Type B-Frame
Terminal Type Lugs
For Use With Square D I-Line Panelboards, Square D I-Line 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, Motor Operator, Rotary Handle
Accessories Phase Connection ABC (Factory Configured)
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, 80% Rated, HID Rated

Product FAQs

8 answers
Will the BGA36040 fit into older Square D I-Line panelboards?

Yes. The PowerPacT B-frame is designed with the same 1.5 inch per pole width as legacy F-frame breakers. This allows it to install easily into existing I-Line panelboards and switchboards without needing blank fillers.

Can the BGA36040 replace an older FA36040 circuit breaker?

Yes. The BGA36040 serves as a modern replacement for the obsolete FA36040 I-Line breaker. The PowerPacT B-frame maintains the same mounting footprint while offering upgraded performance ratings.

What is the tightening torque for the load lugs on the BGA36040?

The mechanical load lugs should be torqued to 31.9 to 38.9 lb-in for 14 to 10 AWG wire, and 44.3 to 54.9 lb-in for 8 to 2/0 AWG wire.

How does this breaker connect to the I-Line bus?

The BGA36040 features a plug-on jaw connection on the line side that snaps directly onto the panelboard busbars. The load side utilizes standard mechanical lugs for wire termination.

What does the G in the BGA series part number signify?

The G indicates the interrupting capacity tier within the PowerPacT B-frame family. For this breaker, the G tier provides a maximum interrupting rating of 35kA at 480VAC and 65kA at 240VAC.

Is the BGA36040 rated for DC voltage applications?

Yes. In addition to its AC ratings, this circuit breaker is rated for up to 250VDC with an interrupting capacity of 20kA. This makes it suitable for specific DC distribution systems.

What does a fixed thermal, fixed magnetic trip unit mean for this breaker?

It means the overcurrent and short-circuit trip thresholds are factory preset and cannot be adjusted in the field. The long-time and instantaneous trip points are permanently calibrated to safely protect a 40A circuit.

Is the BGA36040 rated for 100 percent continuous duty?

No. Like most standard molded case circuit breakers, the BGA36040 has an 80 percent continuous current rating. This means continuous loads lasting three hours or more should not exceed 32 amps.

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Reviews

4.9
Rated 4.9 out of 5 stars
Based on 7 reviews
Rating
Ratings
7 reviews
  • B
    Brent
    Verified Buyer
    Reviewing
    Square D BGA36050 - 50A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/16/26
    Breakers

    Breakers looked great.

  • B
    Brent
    Verified Buyer
    Reviewing
    Square D BGA36030 - 30A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/16/26
    Breakers

    Breakers that were ordered were exactly as expected.

  • PH
    Paul H.
    Verified Buyer
    Reviewing
    Square D BGA36060 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/23/26
    Worked Perfectly.

    Prompt shipping. We received the breaker on-time for a scheduled outage of the switchgear feeding an entire building. Thank you!

  • JB
    Josh B.
    Verified Buyer
    Reviewing
    Square D BGA36070 - 70A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 4 out of 5 stars
    11/11/25
    Great transaction.

    Product arrived in 3 days and as advertised.

  • JM
    John M.
    Flag of United States
    Reviewing
    Square D BGA36080 - 80A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    1/15/24
    Good purchase

    Material arrived in good condition. Glad to have a source to get this quickly.