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Square D QBA32100 Molded Case Circuit Breaker

  • 100A
  • 3 Pole
  • I-Line
Square D QBA32100
Molded Case Circuit Breaker
Brand Square D
SKU QBA32100
Select Item Condition
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  • 100A
  • 3 Pole
  • I-Line

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Square D QBA32100 - 100A 3 Pole Molded Case Circuit Breaker

Square D QBA32100 - 100A 3 Pole Molded Case Circuit Breaker

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$755.61 In Stock

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Description

Built for robust electrical distribution, the Square D QBA32100 is a 100A, 3-pole molded case circuit breaker belonging to the PowerPacT Q-Frame series. It utilizes fixed thermal and magnetic trip units to deliver dependable long-time and instantaneous (LI) protection. This unit features an I-Line mounting style, allowing for efficient plug-on installation into Square D I-Line panelboards. Rated at 10kAIC at 240VAC, it also seamlessly replaces older Q23100 models in existing infrastructure.

Specifications

Key specifications
Brand Square D
Part Number QBA32100
Series QBA
Amperage 100A
Poles 3
Mounting Style I-Line
Voltage 208Y/120VAC, 240VAC
Phase 3
AIC Rating 10kA @ 208Y/120VAC, 10kA @ 240VAC
Fit and installation
Frame Type QBA
Terminal Type Lugs
For Use With Square D I-Line Panelboards and Switchboards
Wire Gauge 4 AWG - 300 kcmil (Al/Cu)
Max Wire 300 kcmil
Min Wire 4 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, Alarm Switch, Padlock Attachment, Motor Operator
Accessories Lugs
Standards CSA C22.2 No. 5, HACR, NEMA AB 1, NOM-003-SCFI-2000, UL 489
Approval CSA, IEC, NOM, UL
Temp Rating 40C
Construction Features HACR Rated, Visual Trip Indicator

Product FAQs

7 answers
Which panelboards are compatible with the QBA32100?

This breaker is designed specifically for Square D I-Line panelboards and switchboards. It features a plug-on I-Line line connection and load-side lugs, making it incompatible with standard unit-mount or load center enclosures.

Can the QBA32100 be installed in older legacy I-Line panelboards?

Yes. Schneider Electric designed the PowerPacT Q-frame breakers to be backward compatible. The QBA32100 can be safely installed in existing or older I-Line panelboards and switchboard distribution sections.

Which older Square D breaker does the QBA32100 replace?

The PowerPacT QBA32100 serves as a direct drop-in replacement for the obsolete Square D Q2 series circuit breakers, specifically replacing the legacy Q23100 I-Line model.

What are the specific magnetic trip thresholds for the QBA32100?

While the thermal and magnetic trip elements are fixed, they have specific factory calibration points. The magnetic hold current is 1200A, and the magnetic instantaneous trip current is 2400A.

What is the default phase configuration for the QBA32100 I-Line connection?

This breaker features a standard ABC phase jaw configuration for connection to the panelboard bus.

Is the QBA32100 rated for use on 480V systems?

No. The PowerPacT Q-frame series is rated for a maximum of 240VAC. It is strictly for low-voltage applications and is not suitable for 480V or 600V electrical systems.

How is the wiring terminated on this breaker?

The load side features standard mechanical box lugs that accept 4 AWG to 300 kcmil copper or aluminum conductors. The line side utilizes the plug-on I-Line jaws, meaning no line-side cabling is required for installation.

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Reviews

4.6
Rated 4.6 out of 5 stars
Based on 12 reviews
Total 5 star reviews: 10
Total 4 star reviews: 1
Total 3 star reviews: 0
Total 2 star reviews: 0
Total 1 star reviews: 1
Rating
Ratings
12 reviews
  • DM
    Donaldo M. A.
    Verified Buyer
    Reviewing
    Square D QBA32125 - 125A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/7/26
    Fast, Easy and Great Item

    I bought this item for the first time and it was great! through the website it was easy to find my exact item and also the payment was easy to submit, deliver was on point.

    Great company and products.

  • KP
    Kevin P.
    Verified Buyer
    Reviewing
    Square D QBA32200 - 200A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/5/26
    Sq D I line breaks

    Great price and is exactly what was discribed

  • DD
    David D.
    Verified Buyer
    Reviewing
    Square D QBA32110 - 110A 3 Pole Molded Case Circuit Breaker
    I do not recommend this product
    Rated 1 out of 5 stars
    1/20/26
    Breaker

    Need to return this item.

  • DM
    Dave M.
    Verified Buyer
    Reviewing
    Square D QBA32150 - 150A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    11/12/25
    Excellent All Around

    Speedy shipping and great staff to work with.

  • DB
    Doug B.
    Flag of United States
    Reviewing
    Square D QBA32200 - 200A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/28/23
    Great service, great item!

    Great service, great item!