Abb THQL1120 Single Pole Circuit Breaker 20A 120/240V

Product Description

The ABB THQL1120 is a single-pole thermal-magnetic circuit breaker rated for 20 amps at 120/240 volts with a 10,000-amp interrupting capacity (10kA IC). It provides overcurrent and short-circuit protection in residential and light commercial electrical panels. The THQL1120 uses a thermal-magnetic trip mechanism that responds to both sustained overloads and instantaneous fault currents. Licensed electricians install this breaker during new panel construction, service upgrades, and branch circuit additions. Its compact single-pole form factor fits standard load center enclosures that accept the THQL breaker series.

The THQL1120 is suited for 120-volt branch circuits in residential load centers and small commercial distribution panels. Typical applications include general lighting circuits, receptacle circuits, and small appliance branch circuits where a 20-amp overcurrent device is required per NEC guidelines. The 10kA interrupting rating meets the fault-current requirements common to most residential utility service points.

Key Features

• 20-amp single-pole rating for standard 120-volt branch circuit protection
• 120/240-volt voltage rating supports residential load center applications
• 10kA interrupting capacity meets NEC requirements at typical residential fault-current levels
• Thermal-magnetic trip mechanism responds to both overload and short-circuit conditions
• THQL series form factor for compatibility with applicable load center enclosures

Compatibility

Designed as an OEM-style replacement or new-installation circuit breaker for load centers and panelboards accepting THQL-series single-pole breakers.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. Always de-energize the panel and verify the absence of voltage with a calibrated meter before handling any breaker or bus connection. Confirm the panel's available fault current does not exceed the breaker's 10kA interrupting rating prior to installation. Do not install this breaker in enclosures that are not rated or listed for the THQL series.

Technical Specifications

• Amperage: 20 amps
• Voltage Rating: 120/240 volts
• Interrupting Capacity: 10,000 amps (10kA IC)
• Number of Poles: 1
• UPC: 783164012866

Standard Information

• Brand: ABB
• Manufacturer Part Number: THQL1120