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Square D QBL32100 Molded Case Circuit Breaker

  • 100A
  • 3 Pole
  • Unit Mount
Square D QBL32100
Molded Case Circuit Breaker
Brand Square D
SKU QBL32100
Select Item Condition
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  • 100A
  • 3 Pole
  • Unit Mount

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Square D QBL32100 - 100A 3 Pole Molded Case Circuit Breaker

Square D QBL32100 - 100A 3 Pole Molded Case Circuit Breaker

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$499.98 In Stock

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Description

Operating at 240VAC, the Square D QBL32100 is a 3-pole, 100A molded case circuit breaker. It utilizes fixed thermal-magnetic trip technology to provide essential long-time and instantaneous (LI) protection for commercial facilities. This PowerPacT Q-frame breaker utilizes a unit-mount design for installation into panelboards and switchboards. It is fully compatible as a replacement for legacy Q23100 breakers.

Specifications

Key specifications
Brand Square D
Part Number QBL32100
Series QBL
Amperage 100A
Poles 3
Mounting Style Unit Mount
Voltage 208Y/120VAC, 240VAC
Phase 3
AIC Rating 10kA @ 208Y/120VAC, 10kA @ 240VAC
Fit and installation
Frame Type QBL
Terminal Type Lugs
For Use With Individual Enclosures, Switchboards, Panelboards (as Main/Sub-feed)
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
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment
Accessories Line and Load Lugs Included
Standards CSA C22.2 No 5, HACR, IEC 60947-2, NEMA AB1, NOM-003-SCFI-2000, UL 489
Approval CSA, IEC, NOM, UL
Temp Rating -25C to 70C
Construction Features HACR Rated, Visual Trip Indicator

Product FAQs

9 answers
What enclosures or panels are compatible with the QBL32100 breaker?

This PowerPacT Q-frame unit-mount breaker is designed for installation in individual enclosures, switchboards, and panelboards where it can function safely as a main or sub-feed breaker.

Does the QBL32100 mount directly to an I-Line panelboard bus?

No, the QBL32100 is strictly a unit-mount circuit breaker. Applications requiring a plug-on I-Line group-mounted connection must use a different PowerPacT Q-frame model, such as the QBA or QDA series.

Can the QBL32100 be used to replace older Square D breakers?

Yes, the PowerPacT Q-frame series serves as a direct replacement for legacy Square D Q2 series devices. The QBL32100 is fully compatible as a drop-in upgrade for the obsolete Q23100 breaker.

How is the QBL32100 breaker wired into a circuit?

It utilizes a feed-thru connection design. The breaker comes factory-equipped with mechanical lugs on both the line and load ends, requiring stripped cable connections rather than specialized busbar mounting hardware.

Are the terminals on the QBL32100 rated for aluminum wiring?

Yes, the included line and load lugs are dual-rated for both aluminum and copper conductors. They accept wire sizes ranging from 4 AWG up to 300 kcmil.

What are the magnetic trip thresholds for this 100A breaker?

While the continuous load rating is 100A, the fixed thermal-magnetic trip unit features a magnetic hold current of 1200A and a magnetic tripping current of 2400A.

What does the QBL prefix indicate about the breaker ratings and design?

In the PowerPacT Q-frame family, the letter B signifies a standard interrupting rating of 10kA at 240VAC. The letter L indicates a unit-mount configuration featuring wire lugs on both the line and load sides.

Can the QBL32100 be installed in a 480V electrical system?

No, this PowerPacT Q-frame breaker is rated for a maximum of 240VAC. It is appropriate for 120V, 208V, and 240V AC applications but cannot be safely used in 480V or 600V distribution systems.

How does the QBL32100 respond to electrical faults?

The breaker uses a thermal-magnetic trip unit with fixed long-time and instantaneous (LI) functions. The thermal element safely trips the breaker during sustained overloads, while the magnetic element provides instantaneous protection against severe short-circuit events.

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Reviews

4.9
Rated 4.9 out of 5 stars
Based on 14 reviews
Total 5 star reviews: 13 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
14 reviews
  • TB
    Timothy B.
    Verified Buyer
    Reviewing
    Square D QBL32150 - 150A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    3/18/26
    square d main breaker

    shipped quickly, and was priced very well

  • JV
    Juan V.
    Flag of United States
    Reviewing
    Square D QBL32225 - 225A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/31/22
    excellent service

    excellent service

  • JM
    J. M.
    Flag of United States
    Reviewing
    Square D QBL22150 - 150A 2 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    3/9/22
    RELIABLE VENDOR

    Superbreakers had stock on hand at 20% less than my regular vender. i got them two days before expected..I am very pleased.

  • HJ
    Howard J.
    Flag of United States
    Reviewing
    Square D QBL22200 - 200A 2 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    10/30/20
    Squad D breaker

    Breaker fit perfectly and well explained

  • LG
    Legrand G.
    Flag of United States
    Reviewing
    Square D QBL22200 - 200A 2 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/30/20
    Great

    Best deal out there! Even better than eBay or Amazon. Thanks