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ABB / General Electric THQDL21125 Molded Case Circuit Breaker

  • 125A
  • 2 Pole
  • Plug-On
ABB / General Electric THQDL21125
Molded Case Circuit Breaker
Brand ABB / General Electric
SKU THQDL21125
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  • 125A
  • 2 Pole
  • Plug-On

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ABB / General Electric THQDL21125 - 125A 2 Pole Molded Case Circuit Breaker

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$168.26 No Stock

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Description

Designed for residential and commercial applications, the GE THQDL21125 is a 2-pole, 125A molded case circuit breaker from the Q-Line family. It delivers reliable thermal magnetic protection with fixed long-time and instantaneous (LI) trip functions. This plug-on breaker mounts into GE PowerMark Gold and PowerMark Plus load centers, requiring four panel spaces for installation. Rated at 22kAIC at 120/240VAC, it features an internal common trip and includes load side lugs.

Specifications

Key specifications
Brand ABB / General Electric
Part Number THQDL21125-R
Series THQDL
Amperage 125A
Poles 2
Mounting Style Plug-On
Voltage 120/240VAC
Phase 1
AIC Rating 22kA @ 120/240VAC
Fit and installation
Frame Type THQL
Terminal Type Lugs
For Use With GE PowerMark Gold Load Centers, GE PowerMark Plus Load Centers
Wire Gauge 1/0 AWG - 250 kcmil (Cu/Al)
Max Wire 250 kcmil
Min Wire 1/0 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, Padlock Attachment
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5, UL 489
Approval CSA, HACR, UL
Temp Rating 40C
Construction Features HACR Rated, Common Trip, Requires 4 Spaces, High Interrupting Capacity

Product FAQs

6 answers
Which load centers are compatible with the THQDL21125 breaker?

This breaker is specifically designed for installation in GE PowerMark Gold and GE PowerMark Plus load centers. Check your panel's wiring diagram to confirm support for THQDL frame types.

Can the THQDL21125 be used as a main breaker?

Yes. With its 125A capacity and feed-thru connection design, the THQDL21125 is frequently utilized as a main breaker or a large feeder in compatible GE residential and light commercial panels.

Is the THQDL frame interchangeable with standard THQL branch breakers?

No. While both belong to the GE Q-Line family, THQDL breakers are designed for 125A to 200A applications and utilize a feed-thru connection. They require specific main breaker or sub-feed mounting positions and will not fit into standard branch slots intended for lower-amperage THQL breakers.

What is the accepted wire gauge for the THQDL21125 lugs?

The factory-installed lugs accept 1/0 AWG to 250 kcmil copper or aluminum conductors. Ensure proper torque is applied during installation as specified on the breaker label.

What applications require the 22kAIC rating of the THQDL21125?

The 22kAIC at 240V interrupting rating is often required for service entrance equipment or panels located close to a utility transformer, where available fault currents exceed the standard 10kAIC limit of typical residential breakers.

How does the LI trip function operate on this breaker?

The thermal-magnetic trip unit features fixed Long-Time (L) and Instantaneous (I) functions. The thermal element responds to sustained overloads by heating up and tripping the breaker, while the magnetic element trips instantly in the event of a high-current short circuit.

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