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ABB / General Electric THQB32015 Miniature Circuit Breaker

  • 15A
  • 3 Pole
  • Bolt-On
ABB / General Electric THQB32015
Miniature Circuit Breaker
Brand ABB / General Electric
SKU THQB32015
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  • 15A
  • 3 Pole
  • Bolt-On

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ABB / General Electric THQB32015 - 15A 3 Pole Miniature Circuit Breaker

ABB / General Electric THQB32015 - 15A 3 Pole Miniature Circuit Breaker

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$85.99 In Stock

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Description

Built for commercial power distribution, this 15A, three-pole miniature circuit breaker provides robust overcurrent protection within the GE Q-Line series. The device installs into GE A-Series panelboards and AQ lighting panels using a secure bolt-on connection. Box lugs accommodate 14-8 AWG copper or 12-8 AWG aluminum wire. With a 10kAIC rating at 240VAC, it delivers fixed LI trip functions. The HACR-rated breaker includes an internal common trip and quick-make/quick-break mechanism.

Specifications

Key specifications
Brand ABB / General Electric
Part Number THQB32015
Series THQB
Amperage 15A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC
Phase 3
AIC Rating 10kA @ 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, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Internal Common Trip, Quick-Make/Quick-Break

Product FAQs

9 answers
What is the difference between GE THQB and THQL circuit breakers?

THQB is a bolt-on circuit breaker designed for commercial A-Series panelboards and AQ lighting panels. THQL is a plug-in breaker intended for residential PowerMark load centers. Because they mount differently to the bus bar, they cannot be used interchangeably.

Which panelboards are compatible with the THQB32015?

This breaker is engineered specifically for bolt-on installation in GE A-Series panelboards and GE AQ lighting panels. It will not snap into standard residential load centers.

Can I use this THQB32015 breaker in a panel that requires THQP?

No. THQP breakers are half-inch plug-in devices designed for residential space-saving applications, whereas the THQB series features a one-inch per pole bolt-on design for commercial panels. They have completely different physical footprints and mounting methods.

Is there a difference between the ABB THQB32015 and the GE THQB32015?

No. ABB acquired GE Industrial Solutions, so the ABB-branded breaker is the exact same component as the General Electric-branded version. They share the same THQB frame, catalog number, dimensions, and UL listings.

Is the THQB32015 HACR rated for HVAC equipment?

Yes. Standard GE Q-Line circuit breakers between 15 and 100 amps, including this 3-pole 15A model, are UL listed as HACR type, making this breaker suitable for heating, air conditioning, and refrigeration applications.

Does this 3-pole breaker carry an SWD rating for switching fluorescent lighting?

No. While it carries an HACR rating, the SWD (Switching Duty) designation only applies to single-pole 15A and 20A 120/240Vac Q-Line circuit breakers.

What is the recommended torque for the box lugs on this THQB32015 breaker?

The terminal screws on a 15A Q-Line THQB breaker are typically torqued to 20 in-lbs. Always verify the exact torque specification printed directly on the breaker label before terminating your 14-8 AWG conductors.

Do I need a service barrier kit for this THQB breaker?

A service barrier kit is only required when a THQB breaker is used as a single service entrance main device to ensure isolation from live parts. For standard branch circuit installations in GE AQ lighting panels or A-Series panelboards, a barrier is not required.

Can I test this thermal-magnetic breaker using a high-pot or megger?

Standard field megger or high-potential (hi-pot) testing is generally not recommended with the breaker connected to the circuit, as it can damage sensitive equipment on the line. The breaker should be completely removed from the circuit before performing high-voltage insulation tests on the system.

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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.