Abb thql1120pdx Dfci Breaker 20A 1 Pole 120/240V

Product Description

The ABB thql1120pdx is a dual function circuit interrupter (DFCI) breaker designed for residential and light commercial electrical panels. It combines AFCI and GFCI protection in a single 1-pole, 20-amp device, eliminating the need for two separate breakers. Rated for 120/240V with a 10,000 AIC interrupt rating, it delivers reliable overcurrent, arc-fault, and ground-fault protection in one unit. The plug-on neutral design speeds installation by connecting directly to the neutral bar without a pigtail wire. Licensed electricians are the primary installers of this device.

This breaker is suited for branch circuits in residential construction and renovation projects where current NEC requirements mandate both AFCI and GFCI protection. Typical applications include bedroom, kitchen, bathroom, and living area circuits where code calls for dual-function protection. The plug-on neutral feature makes it compatible with panels that support neutral bar plug-on connections, reducing wiring complexity during panel builds and service upgrades.

Key Features

• Dual function AFCI and GFCI protection in a single 1-pole breaker
• 20-amp rating with 120/240V compatibility
• 10,000 AIC interrupt rating for standard residential service
• Plug-on neutral design eliminates pigtail neutral wire
• ReliaHome ELITE DFCI-X designation for residential circuit protection

Compatibility

Designed as an OEM-style replacement for 1-pole plug-on neutral DFCI breaker positions in compatible residential load centers. Confirm panel compatibility with plug-on neutral bar design before installation.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the NEC and applicable local electrical codes. De-energize the panel and verify the main breaker is off before handling any internal panel components. Plug-on neutral breakers require a neutral bar designed to accept direct plug-on connections — verify panel compatibility before ordering. Do not install in panels that require pigtail neutral connections.