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GE THHQB2120 miniature circuit breaker, two-pole toggle, bolt-on mount, grey plastic housing

GE

GE THHQB2120 Miniature Circuit Breaker 20A 2 Pole 120/240V AC

SKU CH-QFT1-T5VTV

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.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $184.99
Pricier than about 81% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameGE

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.

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