ABB THQL Q-Line Model 3 Self-T...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,804.46
ABB THQL Q-Line Model 3 Self-Test GFCI Circuit Breaker

ABB THQL Q-Line Model 3 Self-Test GFCI Circuit Breaker

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Model: THQL2140GFT
$1,804.46

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,804.46
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ABB THQL Q-Line Model 3 Self-Test GFCI Circuit Breaker

The ABB THQL Q-Line Model 3 Self-Test GFCI Circuit Breaker is a single-pole (1P) 30A breaker engineered for 120V branch circuits on the Q-Line (Plug-In) frame. Built to HACR (Heating, Air Conditioning, and Refrigeration) load ratings, it delivers automated self-test verification that confirms proper ground-fault interrupter operation without manual testing, helping keep residential and light commercial panels code-ready and protected against line-to-ground fault hazards. It is listed to Standard E51075 for dependable, code-compliant performance.

Key Features

  • Amperage Rating: 30A circuit protection sized for HACR (Heating, Air Conditioning, and Refrigeration) loads.
  • Voltage Rating: 120V, single-pole (1P) configuration for standard branch-circuit applications.
  • Self-Test GFCI Technology: automatically and periodically verifies the ground-fault interrupter is functioning correctly, reducing the need for manual monthly testing.
  • Q-Line Model 3 Design: Sub Brand Q-Line Model 3 on a Q-Line (Plug-In) frame for compatibility with ABB Q-Line panelboards.
  • Load Rating: HACR rated, suitable for heating, air conditioning, and refrigeration equipment circuits.
  • Trip Type: LIG trip characteristic with a non-interchangeable trip range for consistent, dedicated overcurrent protection.
  • Application: Functions as a Model 3 Ground Fault Circuit Interrupter (GFCI) for personnel protection against line-to-ground faults.

Certifications & Compliance

  • Listed to Standard E51075

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Residential and Light Commercial Panelboard Wiring
  • Branch-Circuit Ground-Fault Protection
  • HACR Equipment Circuits (Heating, Air Conditioning, Refrigeration)
  • Q-Line Plug-In Panelboard Upgrades and Replacements
  • Renovation and New Construction Electrical Panels

Why ABB?

ABB's THQL Q-Line breakers are built on the established Q-Line (Plug-In) frame platform with a Model 3 GFCI design, giving electricians a drop-in solution for panels that already use Q-Line components. The self-test capability continuously confirms the GFCI function is working, reducing troubleshooting time, and the breaker is listed to Standard E51075 for reliable, code-compliant ground-fault protection on HACR-rated branch circuits.

Product Specs

Product Type:
Circuit Breaker
Series:
Q-Line Model 3
Voltage Rating:
120V
Amperage Rating:
30A
Standards:
E51075
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Circuit Breakers

ABB THQL2140GFT – Frequently Asked Questions

1) Will the ABB THQL self-test GFCI breaker fit my existing Q-Line panel?
The THQL GFCI breakers are built on the ABB Q-Line (Plug-In) frame, so they plug into panelboards that already take Q-Line components. That makes them a direct add or replacement in residential and light commercial Q-Line panels without changing the interior. If your panel is a different bus design, this is not the breaker for it.
2) What amperages and pole counts do the ABB THQL GFT breakers come in?
Single-pole versions cover 15A, 20A and 30A (THQL1115GFT, THQL1120GFT, THQL1130GFT). Two-pole versions run 15A, 20A, 25A, 30A, 40A and 50A (THQL2115GFT through THQL2150GFT), plus the GFT2 group at 35A, 40A, 50A and 60A (THQL2135GFT2, THQL2140GFT2, THQL2150GFT2, THQL2160GFT2). Pick the pole count from the circuit: 1-pole for a 120V branch circuit, 2-pole for a 240V load such as a water heater or condensing unit.
3) What does self-test GFCI actually do, and do I still have to press the test button monthly?
Self-test means the breaker periodically checks its own ground-fault sensing circuitry on its own and flags a failure, instead of relying on someone walking the panel to press the button. For a property manager or facilities crew with dozens of units, that removes the monthly manual test routine from the GFCI protection itself. The mechanical test button is still there if you want to verify a trip during an inspection.
4) Can I use a THQL GFCI breaker on an air conditioner or heat pump circuit?
Yes. The THQL Q-Line Model 3 breakers carry an HACR load rating, which is what's required for heating, air conditioning and refrigeration equipment branch circuits. For a condensing unit or heat pump you'll typically be on one of the 2-pole versions, sized to the nameplate MCA and max fuse/breaker on the equipment.
5) Is this a GFCI breaker or an AFCI breaker?
Ground fault only. The Model 3 GFCI function protects people against line-to-ground faults; it does not provide arc-fault protection. If your inspector is calling for AFCI on bedroom or living-area circuits, or dual-function protection, a THQL GFT is not the part that satisfies it.
6) Can I swap a standard THQL breaker for the GFCI version in the same slot?
Yes, within the Q-Line plug-in frame. The GFT versions sit on the same Q-Line frame, so upgrading an existing plug-in panel to ground-fault protection is a slot-for-slot change. The one added step: a GFCI breaker needs the circuit neutral landed on the breaker's neutral terminal and the pigtail on the panel neutral bar, not the neutral straight to the bar as a standard breaker would be wired.
7) Can a Square D Multi9 C60 miniature breaker be used in place of the ABB THQL Q-Line GFCI breaker?
No. The ABB THQL Q-Line Model 3 breaker is a plug-in breaker for ABB Q-Line panelboards and provides Model 3 self-test ground-fault interrupter protection for personnel on 120V branch circuits. The Square D Multi9 C60 is a 1-pole C-curve miniature circuit breaker rated 120V AC, and the C60 UL489 version mounts on DIN rail rather than on a plug-in panelboard bus. The C60 provides overcurrent protection on a C trip curve, not ground-fault protection, so it does not satisfy a circuit that must be GFCI protected, and its DIN rail mounting will not land on a Q-Line bus stab.
8) I need a DIN rail mounted breaker for a control panel, not a load center. What should I look at instead of the ABB THQL?
The ABB THQL Q-Line Model 3 is built on the Q-Line plug-in frame for ABB Q-Line panelboards, so it needs a bus stab and will not fit a DIN rail enclosure. For DIN rail work, the Square D C60 UL489 miniature circuit breaker is a DIN rail mount device. Note that the C60 is an overcurrent device, so if the control circuit also requires ground-fault protection you will need to provide that separately.
9) What is the voltage rating on the ABB THQL Q-Line GFCI breaker?
Rated 120V on the single-pole configuration for standard branch circuits. Two-pole versions are the ones to use where you need both ungrounded conductors switched and ground-fault protected on a 240V appliance or equipment circuit.
10) Is the THQL trip rating field-adjustable or interchangeable?
No. These use an LIG trip characteristic with a non-interchangeable trip rating, so the amperage is fixed at the breaker you order. Size the circuit first and buy the matching amperage; you cannot swap a trip unit to change it later.
11) How is this different from a Square D Multi9 or PowerPacT breaker?
The THQL is a plug-in load center breaker with GFCI personnel protection built in, for Q-Line panelboards. The Square D Multi9 C60 and C60 UL489 are DIN rail mount miniature breakers, used in control panels and equipment enclosures rather than a residential load center. The Square D PowerPacT B is a thermal magnetic molded case breaker and the PowerPacT Q is an I-Line bolt-on design, both feeder and distribution class rather than a plug-in branch GFCI. None of those three is a drop-in for a Q-Line panel slot.
12) What is the difference between the ABB THQL Q-Line GFCI breaker and a Square D PowerPacT B thermal magnetic breaker?
They serve different parts of the system. The ABB THQL Q-Line Model 3 is a plug-in branch breaker, 120V, offered from 15A through 60A in 1-pole and 2-pole builds, with self-test GFCI protection against line-to-ground faults. The Square D PowerPacT B is a thermal magnetic molded case breaker, and the PowerPacT Q is an I-Line breaker for I-Line panelboard mounting. Those are feeder and equipment protection devices that trip on overload and short circuit; neither carries the ground-fault personnel protection function, and they do not mount on a Q-Line plug-in bus.
How fast can I get the ABB THQL2140GFT delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the ABB THQL2140GFT come with a warranty?
Absolutely. The ABB THQL2140GFT is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the ABB THQL2140GFT?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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