GE THHQL1120 Circuit Breaker 20A 1 Pole 120/240V AC

Circuit Breaker for AQ and Power Mark Gold Panels

The GE THHQL1120 is a single-pole miniature circuit breaker rated at 20 amps for 120/240V AC systems. It belongs to the THHQL series and provides high interrupting capacity for residential and light commercial load centres. Electricians and facility managers select it for standard branch-circuit protection in compatible panels.

Plug-in mounting with screw-clamp terminals

The breaker uses a plug-in mounting style that seats directly onto the bus of AQ lighting panels and Power Mark Gold load centres. A toggle actuator gives clear on/off indication, while screw-clamp terminals accept wire without specialised tools. Physical dimensions are 3.3 inches long, 1 inch wide and 2.4 inches deep, fitting the standard THQ frame envelope.

22 kA interrupting rating at 120/240V AC

The device carries a maximum AIR rating of 22 kA at 120/240V AC, defining the highest fault current it can safely interrupt. It is also rated for 48V DC applications where the same interrupting capacity does not apply. Installers must verify that the available fault current at the panel does not exceed this limit and that the panel series matches the approved compatibility list.