GE
GE THHQB2120 Miniature Circuit Breaker 20A 2 Pole 120/240V AC
Miniature circuit breaker rated 20 A, 120/240 V AC, 2-pole, bolt-on mounting with 22 kA interrupting capacity for load centres and lighting panels
- 20 A protection for two-pole 120/240 V AC circuits
- 22 kA interrupting capacity handles high fault currents
- Bolt-on mounting fits compatible load centres and lighting panels
- Screw-clamp terminals accept wire down to 14 AWG
- Compact 3.3 × 2 × 2.4 in frame saves panel space
Circuit Breaker for Load Centers
The GE THHQB2120 is a 20 A, two-pole miniature circuit breaker rated for 120/240 V AC single-phase service. It belongs to the THHQB series and provides high interrupting capacity up to 22 kA. The unit is designed for bolt-on mounting in compatible load centers and lighting panels.
Bolt-On Installation with Screw Clamps
The breaker mounts directly onto the bus connections of a load center using a bolt-on style. Terminal connections use screw clamps that accept wire down to 14 AWG. Ensure the panel is rated for the 60 A frame size and that the breaker is fully seated to avoid nuisance tripping or overheating.
Suits Standard Residential Panels
This breaker suits electricians and homeowners adding or replacing a 20 A two-pole circuit in a GE-compatible load center. It is not for DC applications, three-phase systems, or panels requiring plug-in style breakers. Buyers needing a different amperage or pole count should select another model.
Highlights
- 20 A protection for two-pole 120/240 V AC circuits
- 22 kA interrupting capacity handles high fault currents
- Bolt-on mounting fits compatible load centres and lighting panels
- Screw-clamp terminals accept wire down to 14 AWG
- Compact 3.3 × 2 × 2.4 in frame saves panel space
Specifications
| Brand | GE |
|---|
Questions about this item
How can I confirm the THHQB2120 is functioning correctly after installation?
After mounting the bolt-on breaker in the load center, switch the toggle actuator to the ON position and verify that the connected circuit carries its rated 20 A load without tripping; the 22 kA interrupting rating at 120/240 V AC indicates it will clear faults as designed.
What comes with the THHQB2120 and what must I supply separately?
The breaker itself includes the bolt-on frame and screw-clamp terminals rated for a minimum 14 AWG wire; you must provide the compatible load center or lighting panel, the appropriate gauge conductors, and any required mounting hardware.
Which version of the THHQB series should I choose for a 20 A, two-pole application?
The THHQB2120 is the 20 A, two-pole model in the 60 A frame size with a 22 kA AIR rating at 120/240 V AC; select this part number when those exact ratings match your panel schedule.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
