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ABB / General Electric THQB2125 Miniature Circuit Breaker

  • 25A
  • 2 Pole
  • Bolt-On
ABB / General Electric THQB2125
Miniature Circuit Breaker
Brand ABB / General Electric
SKU THQB2125
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  • 25A
  • 2 Pole
  • Bolt-On

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ABB / General Electric THQB2125 - 25A 2 Pole Miniature Circuit Breaker

ABB / General Electric THQB2125 - 25A 2 Pole Miniature Circuit Breaker

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$31.95 In Stock

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Description

Rated 10 kAIC at 120/240VAC, this 25-amp breaker provides essential overcurrent and short-circuit protection for commercial branch circuits. It is designed to bolt into GE A-Series panelboards and AQ lighting panels, offering a secure and stable connection to the busbar. The unit features a quick-make, quick-break mechanism and an internal common trip to ensure both poles open simultaneously during a fault. It is HACR rated for use with heating and air conditioning equipment.

Specifications

Key specifications
Brand ABB / General Electric
Part Number THQB2125
Series THQB
Amperage 25A
Poles 2
Mounting Style Bolt-On
Voltage 120/240VAC
Phase 1
AIC Rating 10kA @ 120/240VAC
Fit and installation
Frame Type THQB
Terminal Type Box Lugs
For Use With GE A-Series Panelboards, GE AQ Lighting Panels
Wire Gauge 14-8 AWG (Cu), 12-8 AWG (Al)
Max Wire 8 AWG
Min Wire 14 AWG (Cu), 12 AWG (Al)
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, Padlock Attachment
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5, HACR, UL 489, NEMA AB 1
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism

Product FAQs

7 answers
Can I install this THQB breaker in a standard GE Powermark Gold load center?

No. The THQB2125 is a bolt-on circuit breaker designed specifically for commercial GE A-Series panelboards and AQ Lighting Panels. Standard residential Powermark Gold load centers require THQL plug-in breakers.

What is the plug-in equivalent to the THQB2125?

If your panelboard requires a plug-in connection instead of a bolt-on connection, the direct 25-amp, 2-pole equivalent is the GE THQL2125.

Will this breaker arrive with GE or ABB branding?

It may arrive with either. ABB acquired GE Industrial Solutions, so the THQB2125 is manufactured to the exact same specifications under both brand names and is fully interchangeable.

How much panel space does the THQB2125 require?

Q-Line breakers are 1 inch wide per pole. Because this is a 2-pole breaker, it will require a total of 2 inches of horizontal mounting space on the panelboard bus.

What is the required tightening torque for the load lugs?

According to ABB and GE specifications, the box lugs should be torqued to 35 in-lb for 14 to 10 AWG wire and 40 in-lb for 8 AWG wire.

Is the THQB2125 HACR rated?

Yes. This circuit breaker carries a Heating, Air Conditioning, and Refrigeration (HACR) rating, making it suitable for protecting dedicated HVAC equipment circuits.

Does this breaker have an internal common trip mechanism?

Yes. It is manufactured with an internal common trip bar to ensure both poles open simultaneously if a fault is detected on either phase.

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Reviews

4.9
Rated 4.9 out of 5 stars
Based on 110 reviews
Reviews Summary
Customers say these circuit breakers arrive quickly and work as expected. Many reviews mention fast shipping, with some receiving orders overnight or within days. Users report the breakers fit properly, install easily, and function correctly in both residential and commercial applications. Common feedback includes competitive pricing and good packaging that protects products during shipping. While most praise the ordering process as straightforward, some note occasional issues with missing installation screws or receiving updated product versions instead of pictured models. Several contractors and electricians appreciate having access to hard-to-find or obsolete breakers when local suppliers lack inventory.
Rating
Ratings
110 reviews
  • SP
    Sarah P.
    Verified Buyer
    Reviewing
    ABB / General Electric THQB1120 - 20A 1 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/15/26
    Exactly as Described

    These are so hard to find at a good price. Will be ordering again.

  • SB
    Seth B.
    Verified Buyer
    Reviewing
    ABB / General Electric THQB1120 - 20A 1 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/8/26
    Hard to find older style breakers

    I am pleased to have access to these breakers. We have a number of them at our church. Local suppliers said that they had never seen this kind of breaker. They fit our panel perfectly.

  • TZ
    Thomas Z.
    Verified Buyer
    Reviewing
    ABB / General Electric THQB32040 - 40A 3 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/30/26
    Great company

    This company is awesome. Every time I call them and I need help with something. They’re right there to help me. They’re also very knowledgeable. They go out of their way to get you the product that you need right away and not a great price.

  • TD
    Terry D.
    Verified Buyer
    Reviewing
    ABB / General Electric THQB2130GFT - 30A GFCI Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/24/26
    30 AMP GFCI @ POLE

    Breakers were new in box as advertised. Good turn around on orders Reasonable pricing much less than abb dealer

  • LM
    Leslie M.
    Verified Buyer
    Reviewing
    ABB / General Electric THQB21100 - 100A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/16/26
    Perfect fit.

    Always timely with delivery and a perfect.fit.