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Square D QBL22125 Molded Case Circuit Breaker

  • 125A
  • 2 Pole
  • Unit Mount
Square D QBL22125
Molded Case Circuit Breaker
Brand Square D
SKU QBL22125
Select Item Condition
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  • 125A
  • 2 Pole
  • Unit Mount

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Square D QBL22125 - 125A 2 Pole Molded Case Circuit Breaker

Square D QBL22125 - 125A 2 Pole Molded Case Circuit Breaker

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$289.99 In Stock

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Description

Engineered for commercial and industrial applications, the Square D QBL22125 provides 125 amps of thermal-magnetic protection. Belonging to the PowerPacT Q-Frame family, it delivers dependable long-time and instantaneous (LI) trip functions for robust electrical system defense. This unit mount breaker installs into Square D Q2 enclosures, control panels, and switchboards. Rated for 10 kAIC at 240VAC, it serves as an exact drop-in replacement for legacy Q22125 breakers.

Specifications

Key specifications
Brand Square D
Part Number QBL22125
Series QBL
Amperage 125A
Poles 2
Mounting Style Unit Mount
Voltage 208Y/120VAC, 240VAC
Phase 1
AIC Rating 10kA @ 208Y/120VAC, 10kA @ 240VAC
Fit and installation
Frame Type QBL
Terminal Type Lugs
For Use With Square D Q2 Enclosures, Switchboards, Control Panels, Meter Mains
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
Accessories Lugs
Standards CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval CSA, IEC, NOM, UL
Temp Rating -25C to 70C
Construction Features HACR Rated

Product FAQs

7 answers
Can I use the QBL22125 to replace an older Q22125 breaker?

Yes, the QBL22125 is a PowerPacT Q-Frame breaker that serves as a direct drop-in replacement for the legacy Square D Q22125.

Does the QBL22125 mount onto a busbar or use wire lugs?

The QBL22125 is a unit-mount, feed-thru circuit breaker. It does not plug onto a panelboard bus; instead, it uses factory-installed lugs on both the line and load sides to terminate wiring.

What equipment is the QBL22125 designed to be installed in?

This breaker is compatible with Square D Q2 enclosures, meter mains, control panels, and switchboards designed to accept unit-mount Q-Frame breakers.

Is the QBL22125 suitable for systems with high available fault current?

The QBL22125 has a standard interrupting rating of 10 kAIC at 240VAC. If your electrical system has a higher available fault current, you must use a higher-rated Q-Frame breaker, such as the QDL, QGL, or QJL series.

What wire gauge and material can be used with the QBL22125 terminals?

The lugs on this breaker are rated for both aluminum and copper conductors, accepting wire sizes from 4 AWG up to 300 kcmil.

What type of trip protection does the QBL22125 provide?

It features a thermal-magnetic trip unit that provides both long-time (thermal) protection against continuous overloads and instantaneous (magnetic) protection against short circuits.

Can the trip settings on the QBL22125 be adjusted in the field?

No, this breaker features fixed thermal and fixed magnetic trip settings. It does not have adjustable dials for the long-time or instantaneous trip functions.

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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