ABB Q-Line Series Thermal-Magn...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$304.90
ABB Q-Line Series Thermal-Magnetic Circuit Breaker

ABB Q-Line Series Thermal-Magnetic Circuit Breaker

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Model: THHQL2115

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

$304.90
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ABB Q-Line Series Thermal-Magnetic Circuit Breaker

The ABB Q-Line Series Thermal-Magnetic Circuit Breaker is a compact, one-inch-per-pole plug-in breaker engineered for residential and commercial load centers and lighting panels. Rated 120/240V with a 20A amperage rating and a 22kA@120 Vac / 22kA@120/240 Vac interrupt rating, this 1-pole thermal-magnetic device is built for HACR/SWD duty. Quick-make/quick-break mechanisms and easy-to-spot trip indication help ensure safe, reliable circuit protection for professional installations.

Key Features

  • Plug-In Connection: Q-Line (Plug-In) design connects directly into compatible load centers and lighting panels.
  • Thermal-Magnetic Application: Combines thermal and magnetic trip elements for dependable overcurrent protection.
  • Amperage Rating: 20A rating suited to standard branch-circuit loads.
  • Voltage Rating: 120/240V rating for residential and light commercial electrical systems.
  • Interrupt Rating: 22kA@120 Vac / 22kA@120/240 Vac interrupt capacity for demanding fault conditions.
  • Quick-Make/Quick-Break Mechanism: Fast-acting operation with common trip bar and clear trip indication for safety.
  • HACR/SWD Load Rating: Suitable for heating, air conditioning, refrigeration, and switching duty applications.
  • Single Pole Configuration: 1-pole, non-interchangeable trip range (Trip Type LI) built on the Q-Line frame for dedicated circuit protection.

Certifications & Compliance

  • HACR/SWD Load Rated
  • UL Standard File No. E11592

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Residential Load Centers and Lighting Panels
  • Commercial Electrical Distribution Systems
  • HACR/SWD Rated Equipment Circuits
  • Branch Circuit Overcurrent Protection
  • Panelboard and Load Center Wiring Upgrades

Why ABB?

ABB Q-Line breakers are engineered with quick-make/quick-break mechanisms, common trip bars, and clear trip indication to deliver dependable, code-compliant circuit protection. With a 22kA interrupt rating and HACR/SWD load rating, this breaker is built for the safety and reliability professional electricians require in residential and commercial installations.

Product Specs

Product Type:
Circuit Breaker
Series:
Q-Line
Voltage Rating:
120/240V
Amperage Rating:
20A
Configuration:
1-Pole
Listing:
UL Listed
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Circuit Breakers

ABB THHQL2115 – Frequently Asked Questions

1) Will an ABB Q-Line THHQL breaker plug into my existing load center?
The Q-Line THHQL is a plug-in breaker, not a bolt-on or DIN rail unit, so it seats directly into load centers and lighting panels built to take Q-Line plug-in breakers. It occupies one inch per pole, which is what sets whether your panel has the space for a single or a two-pole. If your panel is a DIN rail assembly, this is the wrong style entirely and you want a DIN rail mount breaker such as the Square D C60 UL489 miniature circuit breaker instead.
2) What amperages and pole counts do ABB THHQL Q-Line breakers come in?
Four configurations are offered: a standard 1-pole (THHQL1120), a 2-pole 15 amp (THHQL2115), a 2-pole 20 amp (THHQL2120), and a 2-pole 100 amp (THHQL21100). Specify the MPN rather than just the amperage when you order, since pole count and amperage are two separate choices.
3) Can I use a Q-Line THHQL breaker on an air conditioner or refrigeration circuit?
Yes. The THHQL carries an HACR/SWD load rating, which covers heating, air conditioning and refrigeration equipment circuits as well as switching duty on lighting loads. That SWD portion is what lets it be used as a switch for fluorescent lighting circuits rather than purely as overcurrent protection.
4) What is the difference between the ABB Q-Line THHQL breaker and the Square D Multi9 C60 miniature breaker?
They mount in completely different ways. The ABB Q-Line THHQL is a plug-in breaker that snaps directly onto the bus of a compatible load center or lighting panel, one inch per pole, rated 120/240V. The Square D Multi9 C60 is a 1-pole C-curve miniature circuit breaker rated 120V AC from the Multi9 C60 series, a DIN-rail style device used in control panels and equipment enclosures rather than a residential load center bus. If you are replacing a breaker in a plug-in load center, the C60 is not a drop-in for it.
5) I need a UL489 breaker on DIN rail instead of a plug-in load center breaker. What should I use?
Use the Square D C60 UL489 miniature circuit breaker, which is built for DIN rail mounting. The ABB Q-Line THHQL is a plug-in device that seats on a load center bus and has no DIN rail provision, so for a rail-mounted assembly the C60 is the right form factor.
6) Can I use a Square D PowerPacT B instead of an ABB THHQL breaker?
They serve different ends of the system. Both are thermal-magnetic, but the ABB Q-Line THHQL is a branch-circuit plug-in breaker sized one inch per pole for load centers and lighting panels at 120/240V, offered in 1-pole and 2-pole builds. The Square D PowerPacT B is a molded-case thermal magnetic breaker, a bolt-in frame used for feeder and main duty rather than snapping onto a load center bus. Choose the PowerPacT B when the drawing calls for a molded-case frame, and the THHQL when you are filling a plug-in branch position.
7) My panel is an I-Line panelboard. Will the ABB Q-Line THHQL fit it?
No. The ABB Q-Line THHQL is a Q-Line plug-in breaker designed for the bus in compatible load centers and lighting panels, not for I-Line panelboards. For an I-Line panelboard use a breaker built for that bus, such as the Square D PowerPacT Q I-Line circuit breaker.
8) Is 22kA interrupting rating enough for a commercial service?
The Q-Line thermal-magnetic breaker is rated 22kA at 120 Vac and 22kA at 120/240 Vac, which is a high interrupting capacity for a plug-in branch breaker and covers most residential and light commercial panel positions. Match it against the available fault current your utility or engineer calculated at the panel. If your application is a larger distribution board rather than a load center, a molded case breaker like the Square D PowerPacT B thermal magnetic is the different class of device to look at.
9) What voltage are ABB Q-Line THHQL breakers rated for?
120/240V. The 1-pole units protect a 120V branch circuit off a single hot leg; the 2-pole units span both legs for 240V loads like a water heater, condenser, or range circuit. They are not intended for 208Y/120 three-phase panelboard service beyond what that 120/240V rating covers.
10) Is the THHQL breaker trip setting adjustable?
No. It is a non-interchangeable trip breaker, trip type LI, meaning the thermal and magnetic trip elements are fixed at the factory for the rating stamped on the unit. To change the protection level you change the breaker, so order the amperage that matches the conductor and load.
11) Are ABB Q-Line THHQL circuit breakers UL Listed?
Yes, they are UL Listed under UL standard file number E11592. That file reference is what an inspector or a spec reviewer will want to see on a panel schedule submittal.
12) Can I standardize a building's panels on ABB Q-Line breakers?
For a portfolio running Q-Line load centers, the THHQL family covers the common branch positions from a 15 amp 2-pole up to a 100 amp 2-pole plus the 1-pole standard unit, all on the same Q-Line frame with the same plug-in connection. That makes a single spare-stock item list workable across buildings. Panels from other manufacturers will not accept a Q-Line plug-in breaker, so confirm the panel brand before you consolidate.
13) Which breaker should I spec for a 2-pole 100A circuit in a plug-in load center?
The ABB Q-Line THHQL is offered as a 2-pole 100 ampere build, MPN THHQL21100, rated 120/240V and UL Listed. The Square D comparables are different animals for that duty: the C60 and Multi9 C60 are miniature rail-mount devices, and the PowerPacT B and PowerPacT Q are molded-case frames. If the panel takes Q-Line plug-in breakers, the THHQL 2-pole is the one that seats in it.
14) Both the ABB THHQL and the Square D PowerPacT B say thermal-magnetic. Does that make them interchangeable?
No. Thermal-magnetic describes the trip mechanism, not the mounting. The ABB Q-Line THHQL uses that mechanism in a plug-in branch breaker that connects directly to a load center bus at 120/240V, while the Square D PowerPacT B applies it in a molded-case frame. Matching trip technology does not mean the two will land in the same enclosure, so confirm the panel bus before substituting either way.
15) How do I tell if a Q-Line breaker has tripped versus been switched off?
The THHQL has trip indication built into the handle position, so a tripped breaker reads differently from one you turned off deliberately. It also uses a quick-make/quick-break mechanism, and the multi-pole versions use a common trip bar, so a fault on either leg of a 2-pole opens both poles together.
How fast can I get the ABB THHQL2115 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 THHQL2115 come with a warranty?
Absolutely. The ABB THHQL2115 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 THHQL2115?
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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