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Square D QBL32125 Molded Case Circuit Breaker

  • 125A
  • 3 Pole
  • Unit Mount
Square D QBL32125
Molded Case Circuit Breaker
Brand Square D
SKU QBL32125
Select Item Condition
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  • 125A
  • 3 Pole
  • Unit Mount

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Square D QBL32125 - 125A 3 Pole Molded Case Circuit Breaker

Square D QBL32125 - 125A 3 Pole Molded Case Circuit Breaker

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$552.88 In Stock

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Description

Part of the PowerPacT family, the Square D QBL32125 is a 3-pole, 125A molded case circuit breaker built for commercial power distribution. It features a unit mount design with included lugs, making it compatible with Square D individual enclosures and switchboards. This breaker acts as a direct substitute for the legacy Q23125 model. The thermal-magnetic trip mechanism offers fixed long-time and instantaneous protection. Rated at 10kAIC for 240VAC systems, it includes the Visi-Trip feature.

Specifications

Key specifications
Brand Square D
Part Number QBL32125
Series QBL
Amperage 125A
Poles 3
Mounting Style Unit Mount
Voltage 208Y/120VAC, 240VAC
Phase 3
AIC Rating 10kA @ 208Y/120VAC, 10kA @ 240VAC
Fit and installation
Terminal Type Lugs
For Use With Square D Individual Enclosures, Switchboards, Panelboards
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, Undervoltage Release, Alarm Switch, 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, Non-Interchangeable Trip

Product FAQs

7 answers
Which legacy Square D breaker does the QBL32125 replace?

The QBL32125 serves as a direct replacement for obsolete Q2 Series devices, specifically the Q23125 molded case circuit breaker.

How is the QBL32125 installed in a panel?

This is a unit-mount circuit breaker that secures directly to the panelboard or switchboard chassis. It includes factory-installed lugs on both the line and load sides for direct cable connections.

Will the QBL32125 fit in an I-Line panelboard?

No, the QBL32125 is a unit-mount breaker designed for individual enclosures or standard panelboards. For I-Line group-mounted applications, a different PowerPacT Q-frame breaker configuration with plug-on jaws is required.

Can I use aluminum wire with the QBL32125?

Yes, the factory-installed lugs are dual-rated for both aluminum and copper conductors ranging from 4 AWG to 300 kcmil.

Are the trip settings adjustable on the QBL32125?

No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit trip functions are factory set and non-interchangeable.

Is the QBL32125 rated for 100 percent continuous duty?

No, this circuit breaker carries a standard continuous current rating of 80 percent.

How can I manually test the trip mechanism on the QBL32125?

This PowerPacT Q-frame breaker features an integral push-to-trip button on the front cover, allowing electricians to manually trip the breaker to verify mechanical operation.

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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