Abb THHQL1120 Single Pole Circuit Breaker 20A 120/240V

Product Description

The ABB THHQL1120 is a single-pole, thermal-magnetic circuit breaker in the Q Line series, rated at 20 amps and 120/240 volts. It is a plug-in device designed for connection to residential and commercial load centers and lighting panels. The THHQL1120 measures one inch wide per pole, making it a compact fit in standard panel configurations. It uses a Quick-make/Quick-break mechanism for consistent, reliable operation and features easy-to-spot trip indication so technicians can identify a tripped breaker at a glance. Licensed electricians install this breaker during new construction, panel upgrades, and branch circuit replacements.

The THHQL1120 is suited for residential and light commercial applications where a plug-in, single-pole breaker is required in a Q Line compatible load center or lighting panel. Its compact one-inch-per-pole profile allows efficient use of panel space. The breaker can be ordered with auxiliary contact and shunt trip accessories for applications requiring remote monitoring or tripping capability. It is also available in configurations for HID lighting applications. This breaker fits into broader Q Line installations that may include 1, 2, and 3 pole breaker combinations within the same panel.

Key Features

• Thermal-magnetic trip mechanism provides overcurrent and short-circuit protection
• Quick-make/Quick-break mechanism ensures fast, reliable switching action
• One-inch-wide-per-pole compact design maximizes panel space efficiency
• Easy-to-spot trip indication allows rapid visual identification of tripped state
• Common trip bar design for consistent multi-pole coordination across Q Line family
• Compatible with auxiliary contact and shunt trip accessories for expanded functionality

Compatibility

Designed for plug-in connection to Q Line compatible load centers and lighting panels in residential and commercial installations.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize the panel and verify the absence of voltage before handling any breaker or wiring. Confirm the load center is rated for Q Line plug-in breakers before installation. Do not exceed the breaker ampere rating for the connected branch circuit conductors.

Technical Specifications

• Amperage Rating: 20 amps
• Voltage Rating: 120/240 volts
• Number of Poles: 1
• Trip Type: Thermal-magnetic
• Mounting Type: Plug-in
• Width Per Pole: 1 inch
• UPC: 783164117394

Standard Information

• Brand: ABB
• Manufacturer Part Number: THHQL1120