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ABB / General Electric THHQB2150 Miniature Circuit Breaker

  • 50A
  • 2 Pole
  • Bolt-On
ABB / General Electric THHQB2150
Miniature Circuit Breaker
Brand ABB / General Electric
SKU THHQB2150
Select Item Condition
Earn 66 SuperPoints
  • 50A
  • 2 Pole
  • Bolt-On

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ABB / General Electric THHQB2150 - 50A 2 Pole Miniature Circuit Breaker

ABB / General Electric THHQB2150 - 50A 2 Pole Miniature Circuit Breaker

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$66.78 In Stock

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Description

Engineered for commercial applications, the GE THHQB2150 is a 50A, two-pole Q-Line breaker. It provides reliable thermal-magnetic protection for branch circuits requiring higher interrupting capacities. This unit bolts securely into GE A-Series and ReliaGear RQ panelboards, ensuring a solid connection to the bus. Rated at 22kAIC at 120/240VAC, it safely clears substantial fault currents. Additional features include an internal common trip and an HACR rating for HVAC equipment.

Specifications

Key specifications
Brand ABB / General Electric
Part Number THHQB2150
Series THHQB
Amperage 50A
Poles 2
Mounting Style Bolt-On
Voltage 120/240VAC
Phase 1
AIC Rating 22kA @ 120/240VAC
Fit and installation
Frame Type THQB
Terminal Type Box Lugs
For Use With GE A-Series Panelboards, ReliaGear RQ Panelboards
Wire Gauge 8-3 AWG (Cu), 8-3 AWG (Al)
Max Wire 3 AWG
Min Wire 8 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, Undervoltage Release, 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, Common Trip, Quick-Make/Quick-Break, Reverse Feed

Product FAQs

5 answers
Can I install the THHQB2150 in a residential PowerMark load center?

No. The THHQB2150 is a bolt-on circuit breaker intended for commercial GE A-Series and ReliaGear RQ panelboards. Residential PowerMark load centers require plug-in Q-Line breakers, such as the THQL or THHQL series.

What is the difference between the THQB2150 and the THHQB2150?

The difference lies in the short circuit interrupting capacity. The standard THQB2150 has a 10kAIC rating, whereas the THHQB2150 provides a higher 22kAIC rating. Both share the same physical dimensions and bolt-on mounting.

Is the THHQB2150 HACR rated?

Yes, this breaker carries an HACR rating, making it approved for protecting heating, air conditioning, and refrigeration equipment circuits.

Is the THHQB2150 suitable for reverse feed applications?

Yes, this breaker is suitable for reverse feeding. It does not have dedicated line and load markings, allowing it to be back-fed in applications such as secondary power sources.

Does the THHQB2150 require a separate mounting hardware kit?

No, this breaker bolts directly to the busbar of compatible GE A-Series and ReliaGear RQ panelboards using its integrated mounting screws.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 13 reviews
Rating
Ratings
13 reviews
  • JL
    James L. L.
    Verified Buyer
    Reviewing
    ABB / General Electric THHQB21100 - 100A 2 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/6/26
    ABB / General Electric THHQB21100

    Fast Service and delivery, The breaker was as described and brand new! Great pricing and great Service. I paid extra for UPS ground, it was delivered quickly.

  • SN
    Scott N.
    Verified Buyer
    Reviewing
    ABB / General Electric THHQB32030 - 30A 3 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    12/30/25
    Perfect

    The correct breaker the first time - every time.

  • AG
    Alejandra G.
    Verified Buyer
    Reviewing
    ABB / General Electric THHQB1140 - 40A 1 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/4/25
    Everithing is good!

    Everithing is good!

  • LM
    Luis M.
    Flag of United States
    Reviewing
    ABB / General Electric THHQB2145 - 45A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/19/23
    Good product and good service

    Good product and good service

  • SH
    Scott H.
    Flag of United States
    Reviewing
    ABB / General Electric THHQB2180 - 80A 2 Pole Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/21/22
    80amp commercial breaker

    Great how easy it was to order and how fast I got it. I will order one again when needed