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ABB THQMV Q-Line Plug-In Main Breaker, 22K Series
The ABB THQMV Q-Line Plug-In Main Breaker is a 22K series main circuit breaker designed to serve as the primary disconnect for compatible Q-Line panelboards and load centers. This family is offered across five amperage options — 100 amperes, 125 amperes, 150 amperes, 200 amperes, and 225 amperes — so contractors can match the main breaker to the specific ampacity of the service or panel being installed. Every option in the family is UL/CUL listed for code-compliant service entrance and panel main disconnect applications, and shares the same plug-in configuration that allows for straightforward installation into compatible panelboard interiors without additional mounting hardware.
Key Features
- Q-Line Plug-In Design: Plug-in configuration for quick, secure installation into compatible Q-Line panelboards and load centers.
- Main Breaker Function: Serves as the primary disconnecting means for the panelboard, providing a single point of control for the entire electrical system.
- 22K Series Rating: Part of the 22K interrupt rating series, suited for main breaker applications requiring this level of fault-current performance.
- Amperage Range: Available across the family in 100, 125, 150, 200, and 225 ampere ratings to match a wide range of panelboard and service size requirements.
- Listed Standard: Manufactured to UL/CUL standards for use in code-compliant electrical installations.
- Single Unit Packaging: Packaged 1 each for straightforward stocking and installation.
Certifications & Compliance
- UL Listed
- cUL Listed
Technical Specifications
- Interrupt Rating: 10
- Packaging: 1 ea
- Amperage Options: 100A, 125A, 150A, 200A, 225A
Typical Applications
- Panelboard and Load Center Main Disconnects
- Commercial and Industrial Electrical Panels
- Electrical Service Upgrades
- New Construction and Panel Retrofit Projects
Why ABB?
ABB Q-Line main breakers are built to UL/CUL standards, giving electrical contractors and facility managers a dependable main disconnect option for compatible panelboards. With five amperage options spanning 100A to 225A, the plug-in design makes it straightforward to match this breaker to the specific requirements of a given panel, supporting reliable, code-compliant electrical distribution across a wide range of installations.
Manufacturer Resources
Product Specs
- Product Type:
- Circuit Breaker
- Series:
- Q-Line 22K
- Connection Type:
- Plug-In
- Standards:
- UL/CUL
- Department:
- Electrical
- Product Group:
- Wiring Devices
- Configuration:
- Plug-In
- Amperage Rating:
- 100A - 225A
- Listing:
- cULus
- Product Subgroup:
- Circuit Breakers
ABB THQMV200E – Frequently Asked Questions
1) What amp ratings does the ABB Q-Line THQMV main breaker come in?
The Q-Line THQMV plug-in main breaker is offered in five ampere ratings: 100A (THQMV100E), 125A (THQMV125E), 150A (THQMV150E), 200A (THQMV200E) and 225A (THQMV225E). Match the rating to the panel's main bus rating and the service size, not just to the load calculation, since the main cannot exceed what the panelboard interior is rated to carry.
2) Can an ABB Q-Line THQMV breaker be used as a service entrance main disconnect?
Yes. The THQMV is built as the primary disconnecting means for the panelboard, giving one point of control for everything downstream, and it is UL and cUL listed for code-compliant service entrance and panel main disconnect use. The panelboard itself still has to be suitable for service entrance and bonded accordingly.
3) Will this ABB main breaker fit any brand of load center?
No. The THQMV plug-in main is made to seat in compatible Q-Line panelboards and load centers only. Breaker-to-bus fit is specific to the panel family, so verify the panel's interior accepts a Q-Line plug-in main before ordering. If you are working in a Square D I-Line panel, that takes an I-Line breaker such as the PowerPacT Q, not this.
4) What can I use instead of a THQMV plug-in main breaker if the panel uses DIN rail instead of a plug-in interior?
The ABB Q-Line THQMV is a plug-in connection breaker, so it seats into a compatible Q-Line panelboard interior and will not mount to DIN rail. For a DIN rail assembly, the Square D C60 is a UL489 miniature circuit breaker built for DIN rail mounting. Confirm the mounting style of the enclosure before ordering, since the two connection methods are not interchangeable.
5) Is a plug-in main breaker the right choice, or should I be looking at a molded case breaker?
A plug-in main like the Q-Line THQMV is for panelboards and load centers where the main seats directly on the interior and serves as the single disconnect. For a standalone or feeder application mounted in its own enclosure, a molded case unit such as the Square D PowerPacT B thermal magnetic breaker is the different animal. For DIN rail branch protection in control panels, a miniature breaker like the Square D C60 UL489 MCB is what fits, not a panel main.
6) I am upgrading a service from 100A to 200A. Can I just swap the main breaker?
Only if the existing panelboard interior, bus, and conductors are rated for the higher amperage. The THQMV family covers 100A, 125A, 150A, 200A and 225A on the same plug-in Q-Line platform, so the breaker itself is a straight part-number change, but the panel bus rating and service conductors govern what you may install. On a panel rated below the new main, replace the panelboard.
7) For a branch circuit on a 120V control panel, should I use the THQMV or something smaller?
The THQMV family is a main breaker offered from 100 amperes up to 225 amperes, sized as the primary disconnect for a panelboard rather than for an individual branch circuit. For a small 120V AC branch or control circuit, the Square D Multi9 C60 1-pole C-curve miniature circuit breaker is the type of device intended for that duty.
8) What is the difference between the ABB THQMV and the Square D PowerPacT Q I-Line breaker?
Both serve as overcurrent devices in a distribution panel, but they belong to different panel systems. The ABB THQMV is a Q-Line plug-in main breaker, UL and cUL listed, offered in 100, 125, 150, 200 and 225 ampere ratings. The Square D PowerPacT Q is an I-Line breaker, designed for I-Line style panelboard bus connection. Match the breaker to the bus system already in the panel.
9) How is the ABB THQMV main breaker packaged, and do I get mounting hardware with it?
Each THQMV ships as a single unit, packaged one each. No separate mounting hardware comes with it or is needed, since the plug-in design seats straight into the compatible panelboard interior. You will still need whatever lugs, conductors, and panel cover the job calls for.
How fast can I get the ABB THQMV200E delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 THQMV200E come with a warranty?
Absolutely. The ABB THQMV200E is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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