GE
GE THHQB1120 Miniature Circuit Breaker 20A 1 Pole 120/240V AC
A 20 A single-pole breaker rated 120/240 V AC with a 22 kA interrupting capacity and bolt-on mounting for load centres
- High interrupting capacity protects circuits up to 22kA
- Single-pole design fits 120/240V AC panels
- Bolt-on mounting secures to load centers and lighting panels
- Screw-clamp terminals accept wire down to 14 AWG
- Compact 3.3 in frame saves space in 60A enclosures
GE THHQB1120 20A Single-Pole Breaker
This GE THHQB1120 is a 20 amp miniature circuit breaker built for 120/240 volt AC residential and light-commercial panels. It provides high interrupting capacity protection on a single phase for branch circuits such as lighting, receptacles or small appliances.
Bolt-on mounting for compatible load centers
The breaker uses a bolt-on mounting style that secures directly to the bus connections of GE load centers and lighting panels. Screw-clamp terminals accept copper conductors down to 14 AWG, and the 1-inch width fits standard single-pole spaces without requiring additional panel modifications.
Replaces lower-AIR or plug-on single-pole breakers
With a 22 kA interrupting rating at 120/240V AC, this unit upgrades installations where the existing breaker has a lower AIR value or a plug-on design unsuited to the panel bus. The jump is worthwhile when local code demands higher fault-current protection or when the panel specifies bolt-on THHQB series devices.
Highlights
- High interrupting capacity protects circuits up to 22kA
- Single-pole design fits 120/240V AC panels
- Bolt-on mounting secures to load centers and lighting panels
- Screw-clamp terminals accept wire down to 14 AWG
- Compact 3.3 in frame saves space in 60A enclosures
Specifications
| Brand | GE |
|---|
Questions about this item
What is the maximum interrupting capacity of the 20A THHQB breaker?
The GE THHQB1120 has a maximum AIR rating of 22kA at 120/240V AC, providing high interrupting capacity for fault protection.
How much heat does the bolt-on THHQB breaker generate during continuous operation?
As a passive electromechanical device, the breaker produces minimal heat under normal 20A load; sustained warmth indicates a loose screw-clamp terminal or an overloaded circuit.
Which load-center bus system is required to mount this single-pole breaker?
The 1-inch wide, bolt-on frame fits GE load centers and lighting panels with a 60A THHQB bus; it accepts 14 AWG minimum wire via screw-clamp terminals.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
