ABB / General Electric THHQB22020 Miniature Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Quantity
ABB / General Electric THHQB22020 - 20A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for overcurrent protection, the General Electric THHQB22020 miniature circuit breaker is rated 20A and 240VAC with 2 poles and a 22kA interrupting rating at 120/240VAC. This single-phase breaker belongs to the THHQB series and Q-Line family and uses bolt-on mounting. Its fixed thermal-magnetic trip provides long-time and instantaneous protection. Load side lug terminals accept 14-8 AWG wire. It is UL approved and meets HACR standards.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THHQB22020 |
| Series | THHQB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE Lighting Panels and Loadcenters |
| Wire Gauge | 14-8 AWG |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment |
|---|---|
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Quick-Make/Quick-Break |
Product FAQs
8 answersCan I use the General Electric THHQB22020 for a 240VAC single-phase circuit?
This is a 240VAC, two-pole, single-phase miniature circuit breaker for overcurrent protection. Select it when the circuit requires those electrical characteristics; no neutral connection is required.
How should I use the 20A rating when selecting this breaker?
The 20A rating guides selection for the circuit's load and conductor protection requirements. Check both the calculated load and conductor ampacity when choosing the breaker.
How do I check whether its interrupting rating is adequate?
The interrupting rating is 22kA at 120/240VAC. Compare that rating with the available fault current at the installation point; the available fault current must not exceed the interrupting rating.
How does the trip work, and can I adjust it?
The thermal-magnetic trip uses long-time thermal action for sustained overloads and instantaneous magnetic action for high-current faults. Both trip elements are fixed, so select the breaker for the required protection rather than planning to adjust its trip settings.
Why does the 40°C calibration temperature matter?
The thermal trip is calibrated at 40°C. Ambient temperature affects thermal trip behavior, so consider the operating temperature when evaluating overload protection.
What does bolt-on mounting mean for installation?
Bolt-on mounting uses a bolted connection to secure the breaker. Plan for tool access to fasten that connection during installation.
What conductor sizes can I terminate on the load side?
The load-side lug accepts conductors from 14 AWG through 8 AWG. Choose a conductor within that range that also meets the circuit's ampacity requirements.
Why does HACR matter when selecting protection for equipment circuits?
HACR refers to heating, air conditioning, and refrigeration. This classification is relevant when selecting overcurrent protection for that equipment; coordinate the breaker's 20A rating with the equipment's circuit requirements.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 13 reviews.
- JLJames L. L.Verified BuyerReviewingABB / General Electric THHQB21100 - 100A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/6/26ABB / 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.
- SNScott N.Verified BuyerReviewingABB / General Electric THHQB32030 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars12/30/25Perfect
The correct breaker the first time - every time.
- AGAlejandra G.Verified BuyerReviewingABB / General Electric THHQB1140 - 40A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Everithing is good!
Everithing is good!
- LMLuis M.ReviewingABB / General Electric THHQB2145 - 45A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/19/23Good product and good service
Good product and good service
- SHScott H.ReviewingABB / General Electric THHQB2180 - 80A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/21/2280amp commercial breaker
Great how easy it was to order and how fast I got it. I will order one again when needed