Abb THHQL2120 Two-pole Circuit Breaker 20A 120/240V

Product Description

The ABB THHQL2120 is a two-pole plug-on circuit breaker rated for 20 amps at 120/240 volts with a 22,000-amp interrupting capacity (22kAIC). It is designed for residential and light commercial load centers where reliable overcurrent protection is required. The THHQL series is a thermal-magnetic breaker, meaning it trips on both sustained overloads and short-circuit faults. Licensed electricians install this breaker in panelboards during new construction, service upgrades, or branch circuit replacements. Its compact plug-on design allows straightforward installation without specialty tools.

The THHQL2120 fits residential and light commercial panelboards that accept THHQL-series plug-on breakers. It is a common choice for 240-volt branch circuits serving appliances such as HVAC equipment, dryers, water heaters, and subpanels. The two-pole configuration handles a single 240-volt circuit or two 120-volt circuits sharing a common disconnect. It is suited for indoor panel installations where the load demands a 20-amp double-pole breaker.

Key Features

• 20-amp double-pole thermal-magnetic overcurrent protection
• 120/240-volt AC rating for residential and light commercial branch circuits
• 22kAIC interrupting rating for fault current protection
• Plug-on design for compatible load center installation
• Thermal-magnetic trip mechanism responds to both overload and short-circuit conditions

Compatibility

Designed as an OEM-style replacement or new-installation breaker for panelboards accepting THHQL-series two-pole plug-on circuit 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 and lock out the main disconnect before working inside a panelboard. Verify that the load center is listed as compatible with THHQL-series breakers before installation. Do not exceed the breaker or panel ampacity ratings for the circuit being protected.

Technical Specifications

• Amperage: 20 amps
• Voltage Rating: 120/240 volts
• Number of Poles: 2
• Interrupting Capacity: 22,000 amps (22kAIC)
• UPC: 78316411749

Standard Information

• Brand: ABB
• Manufacturer Part Number: THHQL2120